1987/01/01	6.25
1987/01/02	7.00
1987/01/03	7.85
1987/01/04	8.90
1987/01/05	8.20
1987/01/06	7.25
1987/01/07	7.00
1987/01/08	6.50
1987/01/09	6.25
1987/01/10	5.75
1987/01/11	5.50
1987/01/12	5.25
1987/01/13	5.25
1987/01/14	5.00
1987/01/15	4.75
1987/01/16	5.00
1987/01/17	4.75
1987/01/18	4.75
1987/01/19	4.75
1987/01/20	4.75
1987/01/21	4.50
1987/01/22	4.25
1987/01/23	4.00
1987/01/24	4.00
1987/01/25	4.00
1987/01/26	3.75
1987/01/27	4.00
1987/01/28	3.75
1987/01/29	4.00
1987/01/30	4.00
1987/01/31	4.00
1987/02/01	3.75
1987/02/02	3.75
1987/02/03	3.50
1987/02/04	3.75
1987/02/05	3.50
1987/02/06	3.25
1987/02/07	3.00
1987/02/08	3.25
1987/02/09	3.25
1987/02/10	3.75
1987/02/11	4.00
1987/02/12	5.50
1987/02/13	5.50
1987/02/14	5.50
1987/02/15	5.25
1987/02/16	4.75
1987/02/17	4.00
1987/02/18	3.75
1987/02/19	3.50
1987/02/20	3.25
1987/02/21	3.00
1987/02/22	3.00
1987/02/23	2.75
1987/02/24	2.50
1987/02/25	2.35
1987/02/26	2.50
1987/02/27	2.50
1987/02/28	2.50
1987/03/01	2.35
1987/03/02	2.35
1987/03/03	2.50
1987/03/04	2.50
1987/03/05	3.50
1987/03/06	4.25
1987/03/07	5.50
1987/03/08	5.50
1987/03/09	5.25
1987/03/10	5.00
1987/03/11	4.50
1987/03/12	3.75
1987/03/13	2.75
1987/03/14	2.35
1987/03/15	2.20
1987/03/16	2.05
1987/03/17	1.90
1987/03/18	1.90
1987/03/19	1.75
1987/03/20	1.75
1987/03/21	1.75
1987/03/22	1.60
1987/03/23	1.60
1987/03/24	1.60
1987/03/25	1.60
1987/03/26	1.45
1987/03/27	1.45
1987/03/28	1.45
1987/03/29	1.45
1987/03/30	1.45
1987/03/31	1.30
1987/04/01	1.50
1987/04/02	1.30
1987/04/03	1.30
1987/04/04	1.10
1987/04/05	1.10
1987/04/06	1.10
1987/04/07	1.10
1987/04/08	1.00
1987/04/09	1.00
1987/04/10	0.90
1987/04/11	0.90
1987/04/12	0.90
1987/04/13	0.90
1987/04/14	0.80
1987/04/15	0.80
1987/04/16	0.80
1987/04/17	0.80
1987/04/18	1.10
1987/04/19	1.30
1987/04/20	1.00
1987/04/21	6.50
1987/04/22	5.50
1987/04/23	4.70
1987/04/24	3.70
1987/04/25	2.90
1987/04/26	2.40
1987/04/27	2.40
1987/04/28	2.50
1987/04/29	3.10
1987/04/30	5.30
1987/05/01	6.10
1987/05/02	6.50
1987/05/03	6.30
1987/05/04	7.00
1987/05/05	15.50
1987/05/06	17.60
1987/05/07	14.10
1987/05/08	10.90
1987/05/09	10.30
1987/05/10	7.90
1987/05/11	6.30
1987/05/12	5.70
1987/05/13	4.90
1987/05/14	5.90
1987/05/15	4.70
1987/05/16	4.50
1987/05/17	4.30
1987/05/18	3.90
1987/05/19	4.50
1987/05/20	4.70
1987/05/21	4.50
1987/05/22	3.90
1987/05/23	3.70
1987/05/24	3.30
1987/05/25	2.90
1987/05/26	2.70
1987/05/27	2.40
1987/05/28	2.40
1987/05/29	2.70
1987/05/30	2.90
1987/05/31	2.40
1987/06/01	2.70
1987/06/02	3.90
1987/06/03	8.10
1987/06/04	24.30
1987/06/05	19.40
1987/06/06	12.70
1987/06/07	11.40
1987/06/08	11.20
1987/06/09	25.40
1987/06/10	70.80
1987/06/11	51.30
1987/06/12	29.90
1987/06/13	19.00
1987/06/14	16.20
1987/06/15	11.70
1987/06/16	9.80
1987/06/17	9.50
1987/06/18	9.20
1987/06/19	7.90
1987/06/20	7.90
1987/06/21	8.10
1987/06/22	9.80
1987/06/23	8.70
1987/06/24	5.90
1987/06/25	5.30
1987/06/26	4.90
1987/06/27	9.20
1987/06/28	9.80
1987/06/29	6.10
1987/06/30	5.30
1987/07/01	4.70
1987/07/02	4.70
1987/07/03	4.90
1987/07/04	4.70
1987/07/05	4.50
1987/07/06	4.30
1987/07/07	4.90
1987/07/08	5.10
1987/07/09	5.10
1987/07/10	4.70
1987/07/11	4.90
1987/07/12	4.70
1987/07/13	4.70
1987/07/14	4.70
1987/07/15	4.70
1987/07/16	4.50
1987/07/17	4.30
1987/07/18	4.30
1987/07/19	4.10
1987/07/20	4.50
1987/07/21	5.70
1987/07/22	7.00
1987/07/23	4.70
1987/07/24	4.70
1987/07/25	7.00
1987/07/26	13.00
1987/07/27	25.00
1987/07/28	20.50
1987/07/29	14.80
1987/07/30	11.70
1987/07/31	10.30
1987/08/01	9.00
1987/08/02	7.60
1987/08/03	7.30
1987/08/04	6.80
1987/08/05	7.60
1987/08/06	7.60
1987/08/07	12.70
1987/08/08	15.10
1987/08/09	18.30
1987/08/10	42.10
1987/08/11	66.00
1987/08/12	53.40
1987/08/13	36.90
1987/08/14	25.40
1987/08/15	19.40
1987/08/16	38.30
1987/08/17	56.70
1987/08/18	657.50
1987/08/19	421.80
1987/08/20	149.70
1987/08/21	73.80
1987/08/22	53.40
1987/08/23	585.50
1987/08/24	808.10
1987/08/25	546.60
1987/08/26	259.10
1987/08/27	136.10
1987/08/28	85.40
1987/08/29	62.00
1987/08/30	47.60
1987/08/31	37.40
1987/09/01	32.00
1987/09/02	28.20
1987/09/03	25.70
1987/09/04	25.70
1987/09/05	23.90
1987/09/06	33.30
1987/09/07	37.40
1987/09/08	45.50
1987/09/09	66.60
1987/09/10	123.40
1987/09/11	98.70
1987/09/12	83.60
1987/09/13	152.30
1987/09/14	192.00
1987/09/15	279.20
1987/09/16	291.40
1987/09/17	144.60
1987/09/18	125.90
1987/09/19	127.60
1987/09/20	182.00
1987/09/21	157.80
1987/09/22	111.00
1987/09/23	75.60
1987/09/24	53.90
1987/09/25	49.20
1987/09/26	250.00
1987/09/27	388.50
1987/09/28	352.70
1987/09/29	187.00
1987/09/30	115.50
1987/10/01	98.70
1987/10/02	136.10
1987/10/03	125.10
1987/10/04	110.20
1987/10/05	82.90
1987/10/06	67.20
1987/10/07	52.40
1987/10/08	100.10
1987/10/09	264.30
1987/10/10	201.80
1987/10/11	114.70
1987/10/12	81.70
1987/10/13	64.90
1987/10/14	55.00
1987/10/15	48.70
1987/10/16	47.60
1987/10/17	47.60
1987/10/18	48.70
1987/10/19	59.10
1987/10/20	56.20
1987/10/21	62.00
1987/10/22	61.40
1987/10/23	45.50
1987/10/24	43.10
1987/10/25	54.50
1987/10/26	51.30
1987/10/27	40.20
1987/10/28	34.60
1987/10/29	30.30
1987/10/30	27.40
1987/10/31	23.90
1987/11/01	22.00
1987/11/02	21.20
1987/11/03	26.50
1987/11/04	34.60
1987/11/05	42.10
1987/11/06	31.60
1987/11/07	26.90
1987/11/08	69.60
1987/11/09	126.80
1987/11/10	65.40
1987/11/11	47.10
1987/11/12	39.70
1987/11/13	35.50
1987/11/14	34.10
1987/11/15	96.60
1987/11/16	63.10
1987/11/17	44.00
1987/11/18	38.30
1987/11/19	36.00
1987/11/20	36.40
1987/11/21	34.10
1987/11/22	30.80
1987/11/23	28.20
1987/11/24	26.90
1987/11/25	25.40
1987/11/26	25.00
1987/11/27	23.90
1987/11/28	23.50
1987/11/29	22.70
1987/11/30	22.00
1987/12/01	21.20
1987/12/02	20.50
1987/12/03	19.70
1987/12/04	19.40
1987/12/05	18.60
1987/12/06	18.60
1987/12/07	18.30
1987/12/08	18.00
1987/12/09	17.20
1987/12/10	16.50
1987/12/11	15.80
1987/12/12	16.20
1987/12/13	16.20
1987/12/14	16.50
1987/12/15	15.10
1987/12/16	12.70
1987/12/17	10.60
1987/12/18	10.30
1987/12/19	9.80
1987/12/20	9.50
1987/12/21	9.20
1987/12/22	9.20
1987/12/23	9.00
1987/12/24	8.70
1987/12/25	8.70
1987/12/26	8.40
1987/12/27	8.10
1987/12/28	8.10
1987/12/29	7.90
1987/12/30	7.90
1987/12/31	7.90
#===========================================
# Number of observations = 365 / 365
# Average = 36.74