1987/01/01	8.20
1987/01/02	8.20
1987/01/03	8.00
1987/01/04	8.00
1987/01/05	7.80
1987/01/06	7.80
1987/01/07	7.80
1987/01/08	7.60
1987/01/09	7.40
1987/01/10	7.40
1987/01/11	7.40
1987/01/12	7.40
1987/01/13	7.20
1987/01/14	7.00
1987/01/15	7.00
1987/01/16	6.80
1987/01/17	6.60
1987/01/18	6.60
1987/01/19	6.40
1987/01/20	6.20
1987/01/21	6.00
1987/01/22	6.00
1987/01/23	6.00
1987/01/24	5.80
1987/01/25	5.80
1987/01/26	5.80
1987/01/27	5.60
1987/01/28	5.60
1987/01/29	5.60
1987/01/30	5.40
1987/01/31	5.40
1987/02/01	5.20
1987/02/02	5.00
1987/02/03	5.00
1987/02/04	4.80
1987/02/05	4.80
1987/02/06	4.80
1987/02/07	4.80
1987/02/08	4.60
1987/02/09	4.60
1987/02/10	4.60
1987/02/11	4.60
1987/02/12	4.60
1987/02/13	4.40
1987/02/14	4.40
1987/02/15	4.20
1987/02/16	4.00
1987/02/17	4.00
1987/02/18	3.80
1987/02/19	3.80
1987/02/20	3.80
1987/02/21	4.00
1987/02/22	4.20
1987/02/23	4.20
1987/02/24	4.40
1987/02/25	5.20
1987/02/26	5.60
1987/02/27	5.40
1987/02/28	5.00
1987/03/01	4.40
1987/03/02	4.20
1987/03/03	4.60
1987/03/04	4.80
1987/03/05	4.60
1987/03/06	5.00
1987/03/07	5.60
1987/03/08	5.80
1987/03/09	5.80
1987/03/10	5.80
1987/03/11	5.60
1987/03/12	5.20
1987/03/13	4.80
1987/03/14	5.00
1987/03/15	5.40
1987/03/16	5.40
1987/03/17	5.40
1987/03/18	5.00
1987/03/19	4.60
1987/03/20	4.40
1987/03/21	4.20
1987/03/22	4.00
1987/03/23	4.00
1987/03/24	3.80
1987/03/25	3.80
1987/03/26	3.80
1987/03/27	3.80
1987/03/28	3.80
1987/03/29	3.60
1987/03/30	3.60
1987/03/31	3.60
1987/04/01	4.12
1987/04/02	4.33
1987/04/03	4.77
1987/04/04	4.12
1987/04/05	3.90
1987/04/06	3.25
1987/04/07	3.03
1987/04/08	2.82
1987/04/09	2.60
1987/04/10	2.60
1987/04/11	2.38
1987/04/12	2.17
1987/04/13	2.17
1987/04/14	2.17
1987/04/15	1.95
1987/04/16	2.17
1987/04/17	2.38
1987/04/18	2.82
1987/04/19	3.68
1987/04/20	3.90
1987/04/21	3.25
1987/04/22	3.68
1987/04/23	3.47
1987/04/24	3.03
1987/04/25	3.47
1987/04/26	4.33
1987/04/27	4.12
1987/04/28	5.85
1987/04/29	7.15
1987/04/30	7.15
1987/05/01	6.50
1987/05/02	6.07
1987/05/03	5.20
1987/05/04	4.77
1987/05/05	4.77
1987/05/06	5.20
1987/05/07	5.85
1987/05/08	9.97
1987/05/09	9.32
1987/05/10	13.00
1987/05/11	14.80
1987/05/12	13.60
1987/05/13	11.70
1987/05/14	11.05
1987/05/15	11.48
1987/05/16	10.62
1987/05/17	9.32
1987/05/18	8.45
1987/05/19	7.58
1987/05/20	7.58
1987/05/21	6.72
1987/05/22	5.42
1987/05/23	5.20
1987/05/24	6.07
1987/05/25	5.85
1987/05/26	5.85
1987/05/27	5.85
1987/05/28	6.07
1987/05/29	6.07
1987/05/30	5.63
1987/05/31	4.33
1987/06/01	4.12
1987/06/02	4.12
1987/06/03	4.33
1987/06/04	4.77
1987/06/05	5.20
1987/06/06	7.15
1987/06/07	7.80
1987/06/08	10.40
1987/06/09	12.57
1987/06/10	18.70
1987/06/11	21.00
1987/06/12	18.10
1987/06/13	13.90
1987/06/14	12.78
1987/06/15	20.20
1987/06/16	18.70
1987/06/17	16.90
1987/06/18	19.40
1987/06/19	24.50
1987/06/20	18.70
1987/06/21	16.60
1987/06/22	16.00
1987/06/23	15.70
1987/06/24	13.00
1987/06/25	11.48
1987/06/26	10.62
1987/06/27	10.40
1987/06/28	12.57
1987/06/29	9.97
1987/06/30	8.88
1987/07/01	8.45
1987/07/02	8.23
1987/07/03	7.37
1987/07/04	6.72
1987/07/05	6.28
1987/07/06	7.37
1987/07/07	8.02
1987/07/08	8.02
1987/07/09	9.10
1987/07/10	8.67
1987/07/11	8.23
1987/07/12	7.58
1987/07/13	7.15
1987/07/14	6.50
1987/07/15	6.28
1987/07/16	6.07
1987/07/17	5.85
1987/07/18	6.28
1987/07/19	5.85
1987/07/20	5.63
1987/07/21	5.42
1987/07/22	6.28
1987/07/23	5.85
1987/07/24	5.63
1987/07/25	5.85
1987/07/26	7.58
1987/07/27	8.67
1987/07/28	7.58
1987/07/29	7.80
1987/07/30	8.23
1987/07/31	8.23
1987/08/01	6.93
1987/08/02	6.93
1987/08/03	9.10
1987/08/04	7.80
1987/08/05	7.37
1987/08/06	7.58
1987/08/07	7.15
1987/08/08	6.28
1987/08/09	5.85
1987/08/10	9.10
1987/08/11	8.45
1987/08/12	8.67
1987/08/13	9.32
1987/08/14	8.45
1987/08/15	7.37
1987/08/16	8.45
1987/08/17	11.48
1987/08/18	29.00
1987/08/19	200.00
1987/08/20	741.86
1987/08/21	640.00
1987/08/22	336.40
1987/08/23	168.75
1987/08/24	146.70
1987/08/25	1096.80
1987/08/26	1380.87
1987/08/27	1144.80
1987/08/28	462.75
1987/08/29	273.60
1987/08/30	197.50
1987/08/31	141.20
1987/09/01	115.00
1987/09/02	112.00
1987/09/03	95.40
1987/09/04	79.20
1987/09/05	67.10
1987/09/06	57.30
1987/09/07	76.50
1987/09/08	185.00
1987/09/09	201.30
1987/09/10	220.80
1987/09/11	171.25
1987/09/12	134.60
1987/09/13	162.50
1987/09/14	178.75
1987/09/15	333.20
1987/09/16	395.00
1987/09/17	414.25
1987/09/18	407.25
1987/09/19	254.00
1987/09/20	235.80
1987/09/21	445.60
1987/09/22	685.70
1987/09/23	456.90
1987/09/24	314.00
1987/09/25	273.60
1987/09/26	242.80
1987/09/27	407.25
1987/09/28	849.30
1987/09/29	826.30
1987/09/30	622.00
1987/10/01	363.50
1987/10/02	268.00
1987/10/03	216.90
1987/10/04	256.80
1987/10/05	276.40
1987/10/06	237.20
1987/10/07	178.75
1987/10/08	137.90
1987/10/09	141.20
1987/10/10	148.90
1987/10/11	317.20
1987/10/12	296.40
1987/10/13	201.30
1987/10/14	145.60
1987/10/15	107.10
1987/10/16	92.70
1987/10/17	83.70
1987/10/18	72.90
1987/10/19	65.70
1987/10/20	63.60
1987/10/21	61.50
1987/10/22	89.10
1987/10/23	90.90
1987/10/24	83.70
1987/10/25	80.10
1987/10/26	69.20
1987/10/27	62.90
1987/10/28	60.80
1987/10/29	57.30
1987/10/30	44.70
1987/10/31	43.40
1987/11/01	41.00
1987/11/02	36.50
1987/11/03	35.00
1987/11/04	35.00
1987/11/05	42.20
1987/11/06	42.20
1987/11/07	42.80
1987/11/08	46.80
1987/11/09	64.30
1987/11/10	62.90
1987/11/11	99.00
1987/11/12	121.00
1987/11/13	81.90
1987/11/14	65.70
1987/11/15	60.80
1987/11/16	60.10
1987/11/17	60.10
1987/11/18	103.50
1987/11/19	80.10
1987/11/20	58.00
1987/11/21	58.00
1987/11/22	52.40
1987/11/23	57.30
1987/11/24	44.00
1987/11/25	43.40
1987/11/26	37.00
1987/11/27	38.00
1987/11/28	32.00
1987/11/29	32.00
1987/11/30	31.00
1987/12/01	29.50
1987/12/02	28.00
1987/12/03	27.00
1987/12/04	26.50
1987/12/05	25.00
1987/12/06	24.50
1987/12/07	22.20
1987/12/08	21.40
1987/12/09	21.40
1987/12/10	21.00
1987/12/11	20.60
1987/12/12	19.80
1987/12/13	18.70
1987/12/14	18.40
1987/12/15	17.80
1987/12/16	17.50
1987/12/17	16.30
1987/12/18	15.10
1987/12/19	14.50
1987/12/20	13.30
1987/12/21	12.57
1987/12/22	12.35
1987/12/23	12.13
1987/12/24	11.70
1987/12/25	11.48
1987/12/26	11.27
1987/12/27	11.05
1987/12/28	10.83
1987/12/29	10.83
1987/12/30	10.83
1987/12/31	10.62
#===========================================
# Number of observations = 365 / 365
# Average = 66.24