1987/01/01	17.75
1987/01/02	23.50
1987/01/03	20.50
1987/01/04	17.20
1987/01/05	16.10
1987/01/06	15.00
1987/01/07	14.55
1987/01/08	13.65
1987/01/09	13.65
1987/01/10	13.20
1987/01/11	12.75
1987/01/12	12.75
1987/01/13	12.30
1987/01/14	12.30
1987/01/15	12.30
1987/01/16	12.30
1987/01/17	12.30
1987/01/18	12.30
1987/01/19	12.30
1987/01/20	12.30
1987/01/21	11.85
1987/01/22	11.85
1987/01/23	11.85
1987/01/24	11.85
1987/01/25	11.85
1987/01/26	11.85
1987/01/27	11.85
1987/01/28	11.40
1987/01/29	11.40
1987/01/30	11.40
1987/01/31	10.95
1987/02/01	10.50
1987/02/02	10.95
1987/02/03	10.95
1987/02/04	10.50
1987/02/05	10.50
1987/02/06	10.10
1987/02/07	10.10
1987/02/08	10.50
1987/02/09	10.50
1987/02/10	11.85
1987/02/11	15.55
1987/02/12	15.00
1987/02/13	13.20
1987/02/14	11.40
1987/02/15	10.50
1987/02/16	10.10
1987/02/17	10.10
1987/02/18	10.10
1987/02/19	10.10
1987/02/20	9.70
1987/02/21	9.70
1987/02/22	9.70
1987/02/23	9.30
1987/02/24	9.30
1987/02/25	9.30
1987/02/26	8.90
1987/02/27	8.90
1987/02/28	8.50
1987/03/01	8.10
1987/03/02	7.30
1987/03/03	8.10
1987/03/04	11.40
1987/03/05	14.55
1987/03/06	12.75
1987/03/07	11.85
1987/03/08	10.95
1987/03/09	10.10
1987/03/10	10.10
1987/03/11	9.70
1987/03/12	8.50
1987/03/13	8.50
1987/03/14	8.50
1987/03/15	8.50
1987/03/16	8.50
1987/03/17	8.10
1987/03/18	8.10
1987/03/19	8.10
1987/03/20	7.70
1987/03/21	7.70
1987/03/22	7.70
1987/03/23	7.30
1987/03/24	6.90
1987/03/25	6.50
1987/03/26	6.50
1987/03/27	6.15
1987/03/28	5.80
1987/03/29	5.80
1987/03/30	5.80
1987/03/31	5.80
1987/04/01	5.80
1987/04/02	5.80
1987/04/03	5.80
1987/04/04	5.50
1987/04/05	5.50
1987/04/06	5.50
1987/04/07	5.50
1987/04/08	5.50
1987/04/09	5.50
1987/04/10	5.80
1987/04/11	5.80
1987/04/12	5.50
1987/04/13	5.50
1987/04/14	5.50
1987/04/15	5.20
1987/04/16	5.20
1987/04/17	5.50
1987/04/18	9.50
1987/04/19	6.71
1987/04/20	6.40
1987/04/21	6.10
1987/04/22	7.33
1987/04/23	8.57
1987/04/24	9.19
1987/04/25	7.95
1987/04/26	6.40
1987/04/27	5.80
1987/04/28	5.50
1987/04/29	6.10
1987/04/30	8.88
1987/05/01	13.90
1987/05/02	12.30
1987/05/03	9.90
1987/05/04	8.26
1987/05/05	9.19
1987/05/06	16.30
1987/05/07	17.95
1987/05/08	15.50
1987/05/09	12.30
1987/05/10	10.30
1987/05/11	9.19
1987/05/12	8.88
1987/05/13	8.26
1987/05/14	8.26
1987/05/15	8.57
1987/05/16	11.10
1987/05/17	8.88
1987/05/18	8.57
1987/05/19	8.26
1987/05/20	8.88
1987/05/21	8.26
1987/05/22	7.64
1987/05/23	7.33
1987/05/24	6.71
1987/05/25	6.40
1987/05/26	6.40
1987/05/27	6.71
1987/05/28	6.10
1987/05/29	6.10
1987/05/30	7.64
1987/05/31	11.10
1987/06/01	8.57
1987/06/02	8.88
1987/06/03	13.90
1987/06/04	41.35
1987/06/05	35.30
1987/06/06	25.15
1987/06/07	19.30
1987/06/08	16.70
1987/06/09	23.35
1987/06/10	35.30
1987/06/11	36.40
1987/06/12	26.05
1987/06/13	21.10
1987/06/14	20.65
1987/06/15	19.75
1987/06/16	19.30
1987/06/17	20.20
1987/06/18	21.10
1987/06/19	23.80
1987/06/20	20.65
1987/06/21	17.95
1987/06/22	16.70
1987/06/23	16.30
1987/06/24	15.50
1987/06/25	14.30
1987/06/26	13.50
1987/06/27	13.50
1987/06/28	13.50
1987/06/29	13.10
1987/06/30	59.70
1987/07/01	33.10
1987/07/02	27.60
1987/07/03	21.55
1987/07/04	18.85
1987/07/05	17.10
1987/07/06	16.70
1987/07/07	15.90
1987/07/08	21.55
1987/07/09	24.70
1987/07/10	28.70
1987/07/11	24.25
1987/07/12	22.00
1987/07/13	20.65
1987/07/14	19.30
1987/07/15	17.95
1987/07/16	17.95
1987/07/17	17.95
1987/07/18	28.70
1987/07/19	27.60
1987/07/20	24.70
1987/07/21	24.25
1987/07/22	24.25
1987/07/23	20.65
1987/07/24	19.75
1987/07/25	43.90
1987/07/26	107.80
1987/07/27	88.70
1987/07/28	58.20
1987/07/29	47.80
1987/07/30	40.00
1987/07/31	37.00
1987/08/01	54.30
1987/08/02	120.00
1987/08/03	105.40
1987/08/04	82.10
1987/08/05	68.10
1987/08/06	58.20
1987/08/07	56.25
1987/08/08	53.65
1987/08/09	54.95
1987/08/10	106.60
1987/08/11	87.60
1987/08/12	74.55
1987/08/13	59.50
1987/08/14	54.30
1987/08/15	51.70
1987/08/16	49.10
1987/08/17	53.00
1987/08/18	89.80
1987/08/19	188.75
1987/08/20	192.50
1987/08/21	131.25
1987/08/22	105.40
1987/08/23	319.00
1987/08/24	937.50
1987/08/25	660.90
1987/08/26	315.80
1987/08/27	206.40
1987/08/28	160.00
1987/08/29	131.25
1987/08/30	109.00
1987/08/31	94.20
1987/09/01	88.70
1987/09/02	84.30
1987/09/03	136.25
1987/09/04	147.50
1987/09/05	135.00
1987/09/06	125.00
1987/09/07	103.00
1987/09/08	132.50
1987/09/09	137.50
1987/09/10	140.00
1987/09/11	116.25
1987/09/12	107.80
1987/09/13	104.20
1987/09/14	116.25
1987/09/15	101.90
1987/09/16	116.25
1987/09/17	99.70
1987/09/18	92.00
1987/09/19	88.70
1987/09/20	86.50
1987/09/21	98.60
1987/09/22	101.90
1987/09/23	85.40
1987/09/24	70.25
1987/09/25	58.85
1987/09/26	117.50
1987/09/27	185.00
1987/09/28	123.75
1987/09/29	94.20
1987/09/30	87.60
1987/10/01	81.00
1987/10/02	72.40
1987/10/03	78.85
1987/10/04	74.55
1987/10/05	76.70
1987/10/06	81.00
1987/10/07	68.10
1987/10/08	96.40
1987/10/09	120.00
1987/10/10	122.50
1987/10/11	106.60
1987/10/12	84.30
1987/10/13	70.25
1987/10/14	58.20
1987/10/15	65.95
1987/10/16	88.70
1987/10/17	61.65
1987/10/18	56.90
1987/10/19	54.95
1987/10/20	53.00
1987/10/21	54.30
1987/10/22	56.90
1987/10/23	54.30
1987/10/24	54.95
1987/10/25	70.25
1987/10/26	58.85
1987/10/27	54.95
1987/10/28	50.40
1987/10/29	45.20
1987/10/30	43.90
1987/10/31	43.90
1987/11/01	40.00
1987/11/02	40.00
1987/11/03	42.60
1987/11/04	50.40
1987/11/05	57.55
1987/11/06	56.25
1987/11/07	55.60
1987/11/08	58.20
1987/11/09	158.75
1987/11/10	66.20
1987/11/11	53.90
1987/11/12	48.50
1987/11/13	44.65
1987/11/14	43.55
1987/11/15	45.20
1987/11/16	43.00
1987/11/17	41.35
1987/11/18	39.70
1987/11/19	38.60
1987/11/20	38.05
1987/11/21	36.95
1987/11/22	35.85
1987/11/23	34.75
1987/11/24	34.20
1987/11/25	33.65
1987/11/26	33.10
1987/11/27	33.10
1987/11/28	32.55
1987/11/29	32.00
1987/11/30	30.90
1987/12/01	30.35
1987/12/02	30.35
1987/12/03	30.35
1987/12/04	30.35
1987/12/05	29.25
1987/12/06	29.25
1987/12/07	27.60
1987/12/08	27.05
1987/12/09	27.05
1987/12/10	26.50
1987/12/11	26.50
1987/12/12	25.60
1987/12/13	25.15
1987/12/14	24.25
1987/12/15	24.25
1987/12/16	23.80
1987/12/17	23.80
1987/12/18	22.90
1987/12/19	22.45
1987/12/20	22.00
1987/12/21	21.55
1987/12/22	21.10
1987/12/23	21.10
1987/12/24	20.65
1987/12/25	20.65
1987/12/26	20.20
1987/12/27	20.20
1987/12/28	19.30
1987/12/29	18.85
1987/12/30	18.85
1987/12/31	18.40
#===========================================
# Number of observations = 365 / 365
# Average = 42.44