$data <<EOF
09/1988	6.33	6.40	6.31	6.40	1.11%
10/1988	6.40	6.58	6.28	6.38	0.31%
11/1988	6.38	6.41	6.22	6.33	0.78%
12/1988	6.33	6.57	6.25	6.47	2.21%
01/1989	6.47	7.13	6.47	7.10	9.74%
02/1989	7.10	7.16	6.74	6.79	-4.37%
03/1989	6.79	7.59	6.79	7.51	10.60%
04/1989	7.51	7.77	7.48	7.77	3.46%
05/1989	7.77	8.04	7.62	7.93	2.06%
06/1989	7.93	8.02	7.69	7.82	-1.39%
07/1989	7.82	8.17	7.71	8.05	2.94%
08/1989	8.05	8.34	8.03	8.31	3.23%
09/1989	8.31	8.92	8.12	8.12	-2.29%
10/1989	8.12	8.39	7.29	7.73	-4.80%
11/1989	7.73	7.94	7.61	7.94	2.72%
12/1989	7.94	8.53	7.94	8.15	2.64%
01/1990	8.15	8.50	7.70	8.13	0.25%
02/1990	8.13	8.39	7.99	8.12	0.12%
03/1990	8.12	8.29	8.07	8.23	1.35%
04/1990	8.23	8.28	7.80	7.80	-5.22%
05/1990	7.80	8.23	7.80	8.21	5.26%
06/1990	8.21	8.31	7.96	7.96	-3.05%
07/1990	7.96	8.47	7.89	8.39	5.40%
08/1990	8.39	8.72	7.87	8.01	-4.53%
09/1990	8.01	8.33	7.66	7.66	-4.37%
10/1990	7.66	7.87	7.45	7.51	-1.96%
11/1990	7.51	7.62	7.16	7.62	1.46%
12/1990	7.62	7.62	7.16	7.46	-2.10%
01/1991	7.46	7.46	7.00	7.11	-4.69%
02/1991	7.11	7.91	6.98	7.91	11.25%
03/1991	7.91	8.47	7.83	8.47	7.08%
04/1991	8.47	9.06	8.24	8.97	5.90%
05/1991	8.97	9.30	8.68	9.01	0.45%
06/1991	9.01	9.15	8.83	8.97	0.44%
07/1991	8.97	9.24	8.82	9.17	2.23%
08/1991	9.17	9.25	8.56	8.95	-2.40%
09/1991	8.95	9.02	8.56	8.61	-3.80%
10/1991	8.61	8.95	8.53	8.66	0.58%
11/1991	8.66	8.69	8.10	8.12	-6.24%
12/1991	8.12	8.15	7.87	7.99	-1.60%
01/1992	7.99	8.58	7.99	8.24	3.13%
02/1992	8.24	8.29	7.99	8.12	-1.46%
03/1992	8.12	8.21	8.01	8.01	-1.35%
04/1992	8.01	8.66	8.00	8.66	8.11%
05/1992	8.66	9.06	8.47	9.01	4.04%
06/1992	9.01	9.02	8.57	8.62	-4.33%
07/1992	8.62	8.63	8.12	8.21	-4.76%
08/1992	8.21	8.31	7.96	8.21	0.00%
09/1992	8.21	8.39	8.03	8.21	0.00%
10/1992	8.21	8.25	8.02	8.18	0.37%
11/1992	8.18	8.43	8.12	8.40	2.69%
12/1992	8.40	8.50	8.32	8.37	0.36%
01/1993	8.37	8.52	8.13	8.37	0.00%
02/1993	8.37	8.95	8.37	8.72	4.18%
03/1993	8.72	9.21	8.72	9.17	5.16%
04/1993	9.17	9.31	8.95	8.95	-2.40%
05/1993	8.95	9.61	8.95	9.55	6.70%
06/1993	9.55	10.05	9.45	10.00	4.71%
07/1993	10.00	10.45	9.86	10.45	4.50%
08/1993	10.45	10.74	10.31	10.74	2.78%
09/1993	10.74	10.74	10.07	10.55	-1.77%
10/1993	10.55	11.34	10.55	11.25	6.64%
11/1993	11.25	11.68	10.83	11.00	-2.22%
12/1993	11.00	11.63	11.00	11.60	5.45%
01/1994	11.60	12.21	11.57	12.08	4.14%
02/1994	12.08	12.18	11.44	11.63	-3.73%
03/1994	11.63	11.68	10.77	10.77	-7.39%
04/1994	10.77	12.00	10.65	11.76	9.19%
05/1994	11.76	11.95	11.06	11.06	-5.95%
06/1994	11.06	11.42	10.70	10.74	-2.89%
07/1994	10.74	11.37	10.66	11.36	5.77%
08/1994	11.36	11.47	10.72	11.37	0.09%
09/1994	11.37	11.38	10.59	10.64	-6.42%
10/1994	10.64	11.26	10.55	11.26	5.83%
11/1994	11.26	11.26	10.51	10.84	-3.73%
12/1994	10.84	10.86	10.62	10.80	0.37%
01/1995	10.80	10.94	10.59	10.90	0.93%
02/1995	10.90	11.04	10.55	10.55	-3.21%
03/1995	10.55	10.62	10.19	10.61	0.57%
04/1995	10.61	10.94	10.48	10.94	3.11%
05/1995	10.94	11.50	10.94	11.13	1.74%
06/1995	11.13	11.50	10.83	10.83	-2.70%
07/1995	10.83	11.24	10.78	11.13	2.77%
08/1995	11.13	11.25	11.02	11.09	0.36%
09/1995	11.09	11.66	11.09	11.12	0.27%
10/1995	11.12	11.47	10.85	11.09	0.27%
11/1995	11.09	11.89	11.02	11.79	6.31%
12/1995	11.79	12.80	11.79	12.75	8.14%
01/1996	12.75	13.17	12.49	13.05	2.35%
02/1996	13.05	13.84	12.81	12.95	0.77%
03/1996	12.95	13.45	12.89	13.42	3.63%
04/1996	13.42	14.18	13.27	13.86	3.28%
05/1996	13.86	15.02	13.62	14.81	6.85%
06/1996	14.81	15.12	14.65	14.92	0.74%
07/1996	14.92	15.18	14.02	14.02	-6.03%
08/1996	14.02	14.67	13.96	14.16	1.00%
09/1996	14.16	15.12	14.16	15.12	6.78%
10/1996	15.12	16.78	15.12	16.01	5.89%
11/1996	16.01	16.55	15.38	16.39	2.37%
12/1996	16.39	17.19	15.85	17.19	4.88%
01/1997	17.19	18.47	17.03	18.31	6.52%
02/1997	18.31	19.72	18.28	18.76	2.46%
03/1997	18.76	19.62	18.57	19.37	3.25%
04/1997	19.37	19.88	18.28	19.88	2.63%
05/1997	19.88	21.51	19.65	21.25	6.89%
06/1997	21.25	23.85	21.25	23.85	12.24%
07/1997	23.85	26.64	23.85	26.64	11.70%
08/1997	26.64	27.53	23.65	23.65	-11.22%
09/1997	23.65	25.56	23.52	25.18	6.47%
10/1997	25.18	26.46	22.34	23.44	-6.91%
11/1997	23.44	24.98	22.62	23.83	1.66%
12/1997	23.83	25.44	23.83	25.10	5.33%
01/1998	25.10	25.82	23.17	24.39	-2.83%
02/1998	24.39	25.59	23.75	25.59	4.92%
03/1998	25.59	27.56	24.96	26.89	5.08%
04/1998	26.89	27.99	25.56	25.90	-3.68%
05/1998	25.90	26.84	25.39	26.02	0.46%
06/1998	26.02	26.02	24.57	25.59	-1.65%
07/1998	25.59	25.85	23.26	23.26	-9.11%
08/1998	23.26	23.26	19.68	20.07	-13.71%
09/1998	20.07	22.22	19.30	20.96	4.43%
10/1998	20.96	21.07	19.76	20.71	-1.19%
11/1998	20.71	21.32	19.94	20.84	0.63%
12/1998	20.84	21.27	18.92	21.14	1.44%
01/1999	21.14	21.14	17.50	17.50	-17.22%
02/1999	17.50	20.00	17.50	19.75	12.86%
03/1999	19.75	24.90	19.60	24.60	24.56%
04/1999	24.60	27.65	23.80	27.65	12.40%
05/1999	27.65	28.12	25.45	26.60	-3.80%
06/1999	26.60	29.27	26.50	28.50	7.14%
07/1999	28.50	31.70	27.65	29.00	1.75%
08/1999	29.00	31.42	28.05	29.15	0.52%
09/1999	29.15	30.70	27.40	27.40	-6.00%
10/1999	27.40	28.67	26.25	28.35	3.47%
11/1999	28.35	31.55	27.15	29.37	3.60%
12/1999	29.37	31.00	27.40	30.40	3.51%
01/2000	30.40	30.60	27.40	27.40	-9.87%
02/2000	27.40	29.30	25.55	26.95	-1.64%
03/2000	26.95	30.65	26.50	30.65	13.73%
04/2000	30.65	31.55	29.37	31.55	2.94%
05/2000	31.55	34.95	31.55	33.10	4.91%
06/2000	33.10	33.80	32.10	32.55	-1.66%
07/2000	32.55	33.05	30.75	31.70	-2.61%
08/2000	31.70	35.75	31.70	34.25	8.04%
09/2000	34.25	37.25	33.80	34.00	0.73%
10/2000	34.00	37.75	34.00	34.55	1.62%
11/2000	34.55	36.25	33.40	34.50	0.14%
12/2000	34.50	34.50	31.25	33.35	-3.33%
01/2001	33.35	33.35	30.90	32.15	-3.60%
02/2001	32.15	34.15	31.60	32.00	0.47%
03/2001	32.00	32.50	30.65	31.55	-1.41%
04/2001	31.55	33.90	30.22	33.90	7.45%
05/2001	33.90	35.92	32.15	35.92	5.96%
06/2001	35.92	36.75	33.50	34.15	-4.93%
07/2001	34.15	34.20	31.00	33.30	-2.49%
08/2001	33.30	33.40	30.60	31.25	-6.16%
09/2001	31.25	31.75	23.55	27.60	-11.68%
10/2001	27.60	29.60	26.80	28.12	1.88%
11/2001	28.12	29.40	26.45	26.95	-4.16%
12/2001	26.95	28.20	26.10	28.20	4.64%
01/2002	28.20	28.75	26.50	28.75	1.95%
02/2002	28.75	29.85	27.95	29.65	3.13%
03/2002	29.65	31.30	29.65	31.15	5.06%
04/2002	31.15	31.45	28.77	29.32	-5.87%
05/2002	29.32	30.80	28.92	29.80	1.64%
06/2002	29.80	29.80	26.42	28.25	-5.20%
07/2002	28.25	29.10	20.32	23.27	-17.63%
08/2002	23.27	23.95	21.25	22.95	-1.38%
09/2002	22.95	22.95	20.15	20.40	-11.11%
10/2002	20.40	22.90	20.25	21.50	5.39%
11/2002	21.50	22.20	21.15	22.00	2.33%
12/2002	22.00	22.00	20.67	21.15	-3.86%
01/2003	21.15	22.10	18.10	19.27	-8.89%
02/2003	19.27	19.42	17.77	18.35	-4.77%
03/2003	18.35	19.55	16.75	18.65	1.63%
04/2003	18.65	20.10	18.40	18.40	-1.34%
05/2003	18.40	19.60	18.40	19.25	4.62%
06/2003	19.25	20.90	19.25	20.30	5.45%
07/2003	20.30	20.50	19.12	19.55	-3.69%
08/2003	19.55	20.75	19.10	20.40	4.35%
09/2003	20.40	21.00	18.95	18.95	-7.11%
10/2003	18.95	20.15	18.95	19.12	0.90%
11/2003	19.12	19.52	18.67	18.72	-2.09%
12/2003	18.72	20.67	18.72	20.67	10.42%
01/2004	20.67	21.15	18.89	19.03	-7.93%
02/2004	19.03	19.82	18.35	19.82	4.15%
03/2004	19.82	20.67	18.77	19.33	-2.47%
04/2004	19.33	20.89	19.33	20.35	5.28%
05/2004	20.35	20.85	20.07	20.57	1.08%
06/2004	20.57	21.80	20.55	21.10	2.58%
07/2004	21.10	21.29	20.51	20.87	-1.09%
08/2004	20.87	21.06	20.02	20.75	0.57%
09/2004	20.75	21.82	20.63	20.67	0.39%
10/2004	20.67	21.47	20.67	21.20	2.56%
11/2004	21.20	21.75	21.13	21.55	1.65%
12/2004	21.55	21.57	20.85	21.16	-1.81%
01/2005	21.16	22.40	21.00	22.40	5.86%
02/2005	22.40	23.99	22.40	23.67	5.67%
03/2005	23.67	24.52	23.02	23.15	-2.20%
04/2005	23.15	23.90	22.56	22.66	-2.12%
05/2005	22.66	23.82	22.40	23.78	4.94%
06/2005	23.78	27.22	23.78	27.00	13.54%
07/2005	27.00	28.05	24.65	25.45	-5.74%
08/2005	25.45	27.32	25.45	26.41	3.77%
09/2005	26.41	27.43	25.88	27.42	3.82%
10/2005	27.42	27.60	24.25	25.80	-5.91%
11/2005	25.80	26.98	25.59	26.20	1.55%
12/2005	26.20	27.05	25.70	25.98	0.84%
01/2006	25.98	28.16	25.96	28.16	8.39%
02/2006	28.16	28.16	25.25	25.25	-10.33%
03/2006	25.25	26.25	25.16	25.70	1.78%
04/2006	25.70	28.11	25.70	27.30	6.23%
05/2006	27.30	27.46	24.97	25.63	-6.12%
06/2006	25.63	26.17	24.36	26.17	2.11%
07/2006	26.17	27.89	26.17	27.65	5.66%
08/2006	27.65	27.95	26.86	26.86	-2.86%
09/2006	26.86	27.20	25.41	26.09	-2.87%
10/2006	26.09	27.44	25.41	27.12	3.95%
11/2006	27.12	27.84	26.70	26.79	-1.22%
12/2006	26.79	27.05	26.48	26.67	0.45%
01/2007	26.67	26.90	25.50	25.85	-3.07%
02/2007	25.85	26.37	24.57	24.57	-4.95%
03/2007	24.57	25.37	23.95	24.85	1.14%
04/2007	24.85	25.91	24.80	25.53	2.74%
05/2007	25.53	27.86	25.53	27.54	7.87%
06/2007	27.54	30.08	27.54	30.08	9.22%
07/2007	30.08	31.19	28.40	28.79	-4.29%
08/2007	28.79	28.79	25.95	28.40	-1.35%
09/2007	28.40	29.92	28.40	29.02	2.18%
10/2007	29.02	30.70	28.25	30.20	4.07%
11/2007	30.20	30.20	27.05	27.67	-8.38%
12/2007	27.67	28.94	27.31	28.82	4.16%
01/2008	28.82	29.40	23.14	23.79	-17.45%
02/2008	23.79	24.47	23.18	23.67	0.50%
03/2008	23.67	23.67	21.11	21.84	-7.73%
04/2008	21.84	25.88	21.84	25.78	18.04%
05/2008	25.78	28.07	25.78	27.40	6.28%
06/2008	27.40	27.40	24.85	25.89	-5.51%
07/2008	25.89	25.89	22.66	22.93	-11.43%
08/2008	22.93	23.85	22.27	23.85	4.01%
09/2008	23.85	23.85	20.05	20.68	-13.29%
10/2008	20.68	22.23	16.30	22.23	7.50%
11/2008	22.23	22.82	17.35	20.86	-6.16%
12/2008	20.86	20.86	18.18	18.53	-11.17%
01/2009	18.53	20.55	18.04	19.40	4.70%
02/2009	19.40	20.06	17.60	17.60	-9.28%
03/2009	17.60	17.89	15.40	16.78	-4.66%
04/2009	16.78	17.52	16.00	17.52	4.41%
05/2009	17.52	19.03	17.52	19.03	8.62%
06/2009	19.03	19.78	17.67	17.80	-6.46%
07/2009	17.80	18.80	16.77	18.51	3.99%
08/2009	18.51	19.43	18.12	19.31	4.32%
09/2009	19.31	20.12	19.10	19.70	2.02%
10/2009	19.70	21.35	18.99	20.16	2.34%
11/2009	20.16	21.15	19.82	19.82	-1.69%
12/2009	19.82	21.25	19.82	21.07	6.31%
01/2010	21.07	21.82	20.16	20.16	-4.32%
02/2010	20.16	20.48	19.64	20.05	0.55%
03/2010	20.05	21.85	20.05	21.45	6.98%
04/2010	21.45	23.61	21.45	23.61	10.07%
05/2010	23.61	23.61	20.74	21.15	-10.42%
06/2010	21.15	22.30	20.79	20.79	-1.70%
07/2010	20.79	21.86	19.80	21.17	1.83%
08/2010	21.17	22.03	20.93	21.01	0.76%
09/2010	21.01	22.70	21.01	22.25	5.90%
10/2010	22.25	23.37	22.21	23.37	5.03%
11/2010	23.37	24.23	23.22	23.49	0.51%
12/2010	23.49	25.28	23.49	25.04	6.60%
01/2011	25.04	25.87	25.04	25.87	3.31%
02/2011	25.87	26.60	25.16	26.13	1.01%
03/2011	26.13	26.13	23.96	25.69	-1.68%
04/2011	25.69	26.25	24.89	26.03	1.32%
05/2011	26.03	26.13	24.00	24.89	-4.38%
06/2011	24.89	24.89	23.61	24.49	-1.61%
07/2011	24.49	25.99	24.49	25.44	3.88%
08/2011	25.44	25.55	21.60	23.35	-8.22%
09/2011	23.35	24.12	22.22	23.29	0.26%
10/2011	23.29	25.98	22.47	25.75	10.56%
11/2011	25.75	25.99	24.13	25.99	0.93%
12/2011	25.99	28.29	25.60	28.29	8.85%
01/2012	28.29	29.00	26.75	27.05	-4.38%
02/2012	27.05	27.79	27.05	27.31	0.96%
03/2012	27.31	27.45	26.01	26.30	-3.70%
04/2012	26.30	27.00	25.56	27.00	2.66%
05/2012	27.00	27.00	24.53	25.23	-6.56%
06/2012	25.23	26.78	24.39	26.73	5.95%
07/2012	26.73	28.37	26.62	27.58	3.18%
08/2012	27.58	28.96	27.58	27.95	1.34%
09/2012	27.95	28.20	26.87	26.87	-3.86%
10/2012	26.87	27.27	25.93	26.59	-1.04%
11/2012	26.59	27.26	25.51	25.91	-2.56%
12/2012	25.91	26.44	25.75	26.02	0.42%
01/2013	26.02	26.88	25.91	26.30	1.08%
02/2013	26.30	26.30	24.62	25.25	-3.99%
03/2013	25.25	25.65	25.22	25.46	0.83%
04/2013	25.46	25.71	24.31	25.71	0.98%
05/2013	25.71	26.89	25.71	25.84	0.51%
06/2013	25.84	25.84	24.00	24.50	-5.19%
07/2013	24.50	25.97	24.48	25.72	4.98%
08/2013	25.72	25.72	23.85	24.39	-5.17%
09/2013	24.39	24.75	24.31	24.37	0.08%
10/2013	24.37	25.33	23.60	24.65	1.15%
11/2013	24.65	25.20	24.38	24.75	0.41%
12/2013	24.75	25.86	23.94	25.86	4.48%
01/2014	25.86	26.75	25.64	25.71	0.58%
02/2014	25.71	26.76	25.04	26.53	3.19%
03/2014	26.53	26.65	25.51	26.39	0.53%
04/2014	26.39	28.40	26.39	28.40	7.62%
05/2014	28.40	29.15	28.40	28.87	1.65%
06/2014	28.87	30.50	28.80	30.39	5.26%
07/2014	30.39	30.80	29.90	30.65	0.86%
08/2014	30.65	30.82	29.42	30.82	0.55%
09/2014	30.82	31.05	29.82	30.17	-2.11%
10/2014	30.17	30.17	26.03	28.63	-5.10%
11/2014	28.63	28.91	26.71	26.71	-6.71%
12/2014	26.71	28.20	24.78	27.57	3.22%
01/2015	27.57	29.67	25.95	27.13	-1.60%
02/2015	27.13	29.42	27.13	29.40	8.37%
03/2015	29.40	29.40	27.19	27.80	-5.44%
04/2015	27.80	29.49	27.73	28.51	2.55%
05/2015	28.51	28.85	27.10	27.10	-4.95%
06/2015	27.10	27.10	25.68	25.70	-5.17%
07/2015	25.70	26.35	24.57	26.17	1.83%
08/2015	26.17	26.84	21.73	23.77	-9.17%
09/2015	23.77	23.77	20.73	21.25	-10.60%
10/2015	21.25	24.84	21.25	23.95	12.71%
11/2015	23.95	25.10	22.50	23.78	0.71%
12/2015	23.78	23.78	20.02	21.25	-10.64%
01/2016	21.25	21.25	16.80	20.20	-4.94%
02/2016	20.20	21.21	18.66	21.20	4.95%
03/2016	21.20	22.16	21.08	21.39	0.90%
04/2016	21.39	23.73	20.53	23.00	7.53%
05/2016	23.00	23.00	21.75	21.91	-4.74%
06/2016	21.91	24.80	21.77	24.80	13.19%
07/2016	24.80	25.30	23.09	23.09	-6.90%
08/2016	23.09	23.09	21.95	22.09	-4.33%
09/2016	22.09	22.80	21.02	22.40	1.40%
10/2016	22.40	23.50	22.40	22.63	1.03%
11/2016	22.63	24.21	22.63	24.21	6.98%
12/2016	24.21	26.17	24.21	26.14	7.97%
01/2017	26.14	26.76	25.03	25.03	-4.25%
02/2017	25.03	25.78	24.38	24.59	-1.76%
03/2017	24.59	24.98	24.07	24.70	0.45%
04/2017	24.70	25.28	24.03	24.06	-2.59%
05/2017	24.06	25.48	23.99	24.23	0.71%
06/2017	24.23	24.49	23.40	23.40	-3.43%
07/2017	23.40	23.98	23.16	23.98	2.48%
08/2017	23.98	24.53	23.15	23.25	-3.04%
09/2017	23.25	25.70	23.25	25.48	9.59%
10/2017	25.48	26.79	25.48	26.79	5.14%
11/2017	26.79	28.05	25.92	26.81	0.07%
12/2017	26.81	27.95	26.81	27.90	4.07%
01/2018	27.90	29.22	27.88	28.14	0.86%
02/2018	28.14	28.14	25.12	26.30	-6.54%
03/2018	26.30	26.30	25.01	25.87	-1.63%
04/2018	25.87	29.05	25.87	28.91	11.75%
05/2018	28.91	31.04	28.85	29.76	2.94%
06/2018	29.76	30.05	28.67	29.87	0.37%
07/2018	29.87	30.59	29.21	29.45	-1.41%
08/2018	29.45	29.45	27.30	28.09	-4.62%
09/2018	28.09	29.65	27.23	29.65	5.55%
10/2018	29.65	29.93	27.16	28.07	-5.33%
11/2018	28.07	28.07	26.14	26.78	-4.60%
12/2018	26.78	27.15	24.66	25.38	-5.23%
01/2019	25.38	27.12	25.38	27.12	6.86%
02/2019	27.12	28.05	27.12	27.50	1.40%
03/2019	27.50	28.45	27.05	27.93	1.56%
04/2019	27.93	29.25	27.93	28.35	1.50%
05/2019	28.35	28.99	27.81	27.96	-1.38%
06/2019	27.96	29.15	27.82	28.81	3.04%
07/2019	28.81	29.10	28.16	28.50	-1.08%
08/2019	28.50	28.50	24.85	25.31	-11.19%
09/2019	25.31	27.03	25.13	27.03	6.80%
10/2019	27.03	27.04	25.73	26.04	-3.66%
11/2019	26.04	27.34	26.04	26.17	0.50%
12/2019	26.17	26.64	25.57	26.46	1.11%
01/2020	26.46	27.22	23.50	23.50	-11.19%
02/2020	23.50	24.29	19.90	19.90	-15.32%
03/2020	19.90	20.30	10.10	15.60	-21.61%
04/2020	15.60	18.20	15.09	15.25	-2.24%
05/2020	15.25	15.61	14.05	14.25	-6.56%
06/2020	14.25	17.29	14.25	14.39	0.98%
07/2020	14.39	14.85	12.65	12.65	-12.09%
08/2020	12.65	13.93	12.50	12.50	-1.19%
09/2020	12.50	12.50	10.81	10.81	-13.52%
10/2020	10.81	11.36	10.02	11.00	1.76%
11/2020	11.00	15.65	11.00	14.44	31.27%
12/2020	14.44	15.80	14.36	14.84	2.77%
01/2021	14.84	17.10	14.80	15.23	2.63%
02/2021	15.23	17.24	15.20	16.96	11.36%
03/2021	16.96	18.60	16.67	16.93	0.18%
04/2021	16.93	16.93	15.67	15.92	-5.97%
05/2021	15.92	16.69	15.74	15.74	-1.13%
06/2021	15.74	17.51	15.74	16.97	7.81%
07/2021	16.97	17.41	15.70	17.03	0.35%
08/2021	17.03	17.78	16.37	16.77	-1.53%
09/2021	16.77	19.37	16.65	19.37	15.50%
10/2021	19.37	21.44	19.37	19.90	2.74%
11/2021	19.90	20.21	18.31	18.58	-6.63%
12/2021	18.58	19.83	18.50	19.42	4.52%
01/2022	19.42	22.82	19.42	22.23	14.47%
02/2022	22.23	24.37	22.23	23.27	4.68%
03/2022	23.27	25.38	22.52	25.00	7.43%
04/2022	25.00	26.99	24.90	25.21	0.84%
05/2022	25.21	28.28	25.21	27.61	9.52%
06/2022	27.61	28.70	23.07	24.87	-9.92%
07/2022	24.87	26.10	22.50	26.10	4.95%
08/2022	26.10	27.90	25.30	26.49	1.49%
09/2022	26.49	27.21	24.30	25.46	-3.89%
10/2022	25.46	28.29	25.46	27.69	8.76%
11/2022	27.69	28.50	26.29	28.25	2.02%
12/2022	28.25	28.25	25.91	26.59	-5.88%
01/2023	26.59	27.49	26.20	26.70	0.41%
02/2023	26.70	29.00	26.30	28.70	7.49%
03/2023	28.70	29.35	25.26	26.70	-6.97%
04/2023	26.70	28.10	26.70	27.63	3.48%
05/2023	27.63	28.10	26.30	26.49	-4.13%
06/2023	26.49	27.77	26.29	27.74	4.72%
07/2023	27.74	28.68	26.90	27.68	0.22%
08/2023	27.68	28.63	27.30	28.63	3.43%
09/2023	28.63	30.93	28.63	30.50	6.53%
10/2023	30.50	32.38	29.10	30.68	0.59%
11/2023	30.68	31.90	29.55	30.10	-1.89%
12/2023	30.10	30.30	29.26	29.96	0.47%
01/2024	29.96	30.64	27.69	29.21	-2.50%
02/2024	29.21	29.90	29.00	29.10	0.38%
03/2024	29.10	31.19	28.63	31.19	7.18%
04/2024	31.19	34.27	31.19	33.79	8.34%
05/2024	33.79	34.49	32.36	33.21	-1.72%
06/2024	33.21	33.34	32.01	33.34	0.39%
07/2024	33.34	34.10	32.65	33.54	0.60%
08/2024	33.54	33.54	31.80	32.30	-3.70%
09/2024	32.30	32.30	29.50	29.50	-8.67%
10/2024	29.50	32.00	29.50	30.90	4.75%
11/2024	30.90	31.85	30.52	30.76	0.45%
12/2024	30.76	30.80	28.98	29.82	-3.06%
01/2025	29.82	32.50	29.82	31.91	7.01%
02/2025	31.91	32.83	31.68	31.91	0.00%
03/2025	31.91	33.99	30.27	33.84	6.05%
04/2025	33.84	33.84	26.75	28.79	-14.92%
05/2025	28.79	30.30	28.79	29.45	2.29%
06/2025	29.45	32.00	29.21	30.21	2.58%
07/2025	30.21	31.73	29.70	31.73	5.03%
08/2025	31.73	31.83	30.47	31.83	0.32%
09/2025	31.83	31.83	30.10	30.24	-5.00%
10/2025	30.24	32.98	30.24	32.70	8.13%
11/2025	32.70	33.48	31.50	31.76	-2.87%
12/2025	31.76	32.24	30.32	31.32	-1.39%
EOF

set term pdf size 22,13
set term pdf font "sans,20"
set output "Shell_stock_price.pdf"
set grid
set key top left
set xdata time
set timefmt "%m/%Y"
set format x "%b %Y"
set xtics rotate by -90 
set xtics 365.25*24*60*60/1	# 1 tics per year

wd = 15.25*24*60*60	# 15.25 days box width
set style fill transparent solid 0.8
plot $data using 1:(($3+$4)/2):(wd):(($4-$3)/2) with boxxyerror lw 1 lc 3 title "Shell (ex Royal Dutch Shell) A [GB00BP6MXD84] "