1987/01/01	7.84
1987/01/02	7.84
1987/01/03	7.62
1987/01/04	7.62
1987/01/05	7.40
1987/01/06	7.40
1987/01/07	7.18
1987/01/08	6.96
1987/01/09	6.74
1987/01/10	6.52
1987/01/11	6.30
1987/01/12	6.30
1987/01/13	6.30
1987/01/14	6.30
1987/01/15	6.10
1987/01/16	6.10
1987/01/17	6.10
1987/01/18	6.10
1987/01/19	5.90
1987/01/20	5.90
1987/01/21	5.90
1987/01/22	5.90
1987/01/23	5.90
1987/01/24	5.70
1987/01/25	5.70
1987/01/26	5.70
1987/01/27	5.50
1987/01/28	5.30
1987/01/29	5.10
1987/01/30	5.10
1987/01/31	5.10
1987/02/01	5.10
1987/02/02	4.90
1987/02/03	4.70
1987/02/04	4.70
1987/02/05	4.70
1987/02/06	4.70
1987/02/07	4.50
1987/02/08	4.50
1987/02/09	4.50
1987/02/10	4.50
1987/02/11	4.50
1987/02/12	4.50
1987/02/13	4.30
1987/02/14	4.30
1987/02/15	4.30
1987/02/16	4.30
1987/02/17	4.30
1987/02/18	4.30
1987/02/19	4.30
1987/02/20	4.12
1987/02/21	4.12
1987/02/22	4.12
1987/02/23	5.50
1987/02/24	6.30
1987/02/25	5.30
1987/02/26	5.10
1987/02/27	4.90
1987/02/28	4.70
1987/03/01	4.50
1987/03/02	3.94
1987/03/03	7.62
1987/03/04	6.10
1987/03/05	6.52
1987/03/06	7.84
1987/03/07	8.06
1987/03/08	8.06
1987/03/09	7.84
1987/03/10	6.96
1987/03/11	5.90
1987/03/12	4.90
1987/03/13	4.70
1987/03/14	4.30
1987/03/15	3.94
1987/03/16	3.76
1987/03/17	3.58
1987/03/18	3.40
1987/03/19	3.22
1987/03/20	3.22
1987/03/21	3.04
1987/03/22	3.04
1987/03/23	2.86
1987/03/24	2.86
1987/03/25	2.68
1987/03/26	2.68
1987/03/27	2.68
1987/03/28	2.68
1987/03/29	2.50
1987/03/30	3.94
1987/03/31	4.12
1987/04/01	4.30
1987/04/02	5.50
1987/04/03	4.30
1987/04/04	3.76
1987/04/05	3.40
1987/04/06	3.22
1987/04/07	2.86
1987/04/08	2.68
1987/04/09	2.50
1987/04/10	2.35
1987/04/11	2.35
1987/04/12	2.20
1987/04/13	2.20
1987/04/14	2.20
1987/04/15	2.05
1987/04/16	2.05
1987/04/17	2.05
1987/04/18	5.30
1987/04/19	5.10
1987/04/20	9.25
1987/04/21	5.90
1987/04/22	12.25
1987/04/23	7.62
1987/04/24	7.18
1987/04/25	7.62
1987/04/26	5.90
1987/04/27	4.50
1987/04/28	3.94
1987/04/29	5.90
1987/04/30	7.18
1987/05/01	10.00
1987/05/02	7.62
1987/05/03	7.18
1987/05/04	5.30
1987/05/05	16.60
1987/05/06	29.80
1987/05/07	44.55
1987/05/08	32.80
1987/05/09	14.75
1987/05/10	8.75
1987/05/11	6.52
1987/05/12	5.30
1987/05/13	4.50
1987/05/14	4.70
1987/05/15	5.50
1987/05/16	11.00
1987/05/17	7.18
1987/05/18	5.30
1987/05/19	4.12
1987/05/20	3.22
1987/05/21	3.04
1987/05/22	3.58
1987/05/23	5.30
1987/05/24	3.76
1987/05/25	3.04
1987/05/26	2.86
1987/05/27	3.22
1987/05/28	3.04
1987/05/29	5.30
1987/05/30	7.84
1987/05/31	7.40
1987/06/01	6.52
1987/06/02	6.96
1987/06/03	6.96
1987/06/04	19.30
1987/06/05	35.80
1987/06/06	40.70
1987/06/07	55.20
1987/06/08	42.45
1987/06/09	56.00
1987/06/10	44.90
1987/06/11	34.90
1987/06/12	35.20
1987/06/13	38.80
1987/06/14	33.10
1987/06/15	22.90
1987/06/16	17.50
1987/06/17	18.10
1987/06/18	20.50
1987/06/19	14.75
1987/06/20	12.25
1987/06/21	14.75
1987/06/22	12.25
1987/06/23	25.90
1987/06/24	20.80
1987/06/25	11.50
1987/06/26	9.25
1987/06/27	7.62
1987/06/28	6.74
1987/06/29	5.90
1987/06/30	5.10
1987/07/01	4.70
1987/07/02	4.70
1987/07/03	4.30
1987/07/04	4.30
1987/07/05	5.90
1987/07/06	5.50
1987/07/07	5.90
1987/07/08	8.28
1987/07/09	7.84
1987/07/10	8.06
1987/07/11	10.75
1987/07/12	13.75
1987/07/13	11.50
1987/07/14	8.50
1987/07/15	7.40
1987/07/16	6.52
1987/07/17	6.10
1987/07/18	5.70
1987/07/19	5.50
1987/07/20	5.10
1987/07/21	5.10
1987/07/22	4.70
1987/07/23	4.30
1987/07/24	6.10
1987/07/25	5.50
1987/07/26	5.10
1987/07/27	7.84
1987/07/28	5.90
1987/07/29	4.90
1987/07/30	4.30
1987/07/31	3.94
1987/08/01	3.94
1987/08/02	3.94
1987/08/03	3.94
1987/08/04	5.70
1987/08/05	5.10
1987/08/06	5.90
1987/08/07	6.10
1987/08/08	5.30
1987/08/09	5.10
1987/08/10	5.90
1987/08/11	9.75
1987/08/12	23.20
1987/08/13	26.80
1987/08/14	19.00
1987/08/15	15.50
1987/08/16	19.30
1987/08/17	51.20
1987/08/18	117.00
1987/08/19	155.65
1987/08/20	143.55
1987/08/21	115.00
1987/08/22	100.40
1987/08/23	98.15
1987/08/24	220.00
1987/08/25	274.30
1987/08/26	330.85
1987/08/27	328.90
1987/08/28	270.40
1987/08/29	206.20
1987/08/30	152.35
1987/08/31	108.05
1987/09/01	70.40
1987/09/02	50.50
1987/09/03	44.90
1987/09/04	38.50
1987/09/05	34.30
1987/09/06	36.10
1987/09/07	47.35
1987/09/08	115.00
1987/09/09	173.80
1987/09/10	203.20
1987/09/11	191.80
1987/09/12	209.80
1987/09/13	202.00
1987/09/14	178.20
1987/09/15	163.90
1987/09/16	134.50
1987/09/17	99.95
1987/09/18	84.40
1987/09/19	76.40
1987/09/20	110.75
1987/09/21	115.50
1987/09/22	130.50
1987/09/23	120.00
1987/09/24	154.00
1987/09/25	139.50
1987/09/26	127.50
1987/09/27	136.00
1987/09/28	129.00
1987/09/29	114.00
1987/09/30	95.90
1987/10/01	82.80
1987/10/02	84.80
1987/10/03	91.85
1987/10/04	100.40
1987/10/05	92.30
1987/10/06	92.75
1987/10/07	90.95
1987/10/08	81.60
1987/10/09	75.20
1987/10/10	82.40
1987/10/11	91.85
1987/10/12	87.35
1987/10/13	74.80
1987/10/14	67.20
1987/10/15	79.60
1987/10/16	75.60
1987/10/17	60.00
1987/10/18	50.50
1987/10/19	47.00
1987/10/20	48.40
1987/10/21	59.60
1987/10/22	79.60
1987/10/23	66.40
1987/10/24	59.20
1987/10/25	54.00
1987/10/26	47.00
1987/10/27	41.75
1987/10/28	38.50
1987/10/29	33.70
1987/10/30	31.30
1987/10/31	29.80
1987/11/01	28.30
1987/11/02	68.80
1987/11/03	47.00
1987/11/04	40.00
1987/11/05	34.90
1987/11/06	31.00
1987/11/07	31.90
1987/11/08	28.30
1987/11/09	27.10
1987/11/10	25.00
1987/11/11	23.20
1987/11/12	22.90
1987/11/13	22.00
1987/11/14	21.70
1987/11/15	20.50
1987/11/16	19.90
1987/11/17	22.30
1987/11/18	20.20
1987/11/19	20.20
1987/11/20	20.50
1987/11/21	20.80
1987/11/22	18.40
1987/11/23	17.20
1987/11/24	16.30
1987/11/25	15.50
1987/11/26	15.25
1987/11/27	15.00
1987/11/28	14.50
1987/11/29	14.00
1987/11/30	13.00
1987/12/01	13.00
1987/12/02	12.50
1987/12/03	12.00
1987/12/04	11.50
1987/12/05	11.25
1987/12/06	11.00
1987/12/07	11.00
1987/12/08	10.75
1987/12/09	10.50
1987/12/10	10.25
1987/12/11	10.25
1987/12/12	10.00
1987/12/13	10.00
1987/12/14	10.00
1987/12/15	9.75
1987/12/16	9.75
1987/12/17	9.50
1987/12/18	9.25
1987/12/19	9.00
1987/12/20	8.75
1987/12/21	8.50
1987/12/22	8.28
1987/12/23	8.06
1987/12/24	8.06
1987/12/25	7.84
1987/12/26	7.62
1987/12/27	7.40
1987/12/28	7.62
1987/12/29	7.62
1987/12/30	7.40
1987/12/31	7.40
#===========================================
# Number of observations = 365 / 365
# Average = 30.85