1987/01/01	2.00
1987/01/02	2.20
1987/01/03	2.40
1987/01/04	2.20
1987/01/05	2.00
1987/01/06	2.00
1987/01/07	2.20
1987/01/08	2.00
1987/01/09	2.00
1987/01/10	2.00
1987/01/11	2.00
1987/01/12	1.80
1987/01/13	1.40
1987/01/14	1.40
1987/01/15	1.20
1987/01/16	1.20
1987/01/17	1.00
1987/01/18	1.20
1987/01/19	1.60
1987/01/20	1.40
1987/01/21	1.60
1987/01/22	1.40
1987/01/23	1.60
1987/01/24	1.80
1987/01/25	1.60
1987/01/26	1.40
1987/01/27	1.40
1987/01/28	1.20
1987/01/29	1.00
1987/01/30	1.00
1987/01/31	1.20
1987/02/01	1.20
1987/02/02	0.80
1987/02/03	1.00
1987/02/04	1.00
1987/02/05	1.00
1987/02/06	1.00
1987/02/07	0.80
1987/02/08	0.80
1987/02/09	0.80
1987/02/10	0.80
1987/02/11	0.70
1987/02/12	0.80
1987/02/13	0.80
1987/02/14	0.70
1987/02/15	1.00
1987/02/16	1.40
1987/02/17	1.60
1987/02/18	1.80
1987/02/19	1.60
1987/02/20	1.60
1987/02/21	1.80
1987/02/22	2.00
1987/02/23	2.00
1987/02/24	2.00
1987/02/25	1.60
1987/02/26	1.60
1987/02/27	1.60
1987/02/28	1.40
1987/03/01	1.40
1987/03/02	1.40
1987/03/03	1.80
1987/03/04	2.00
1987/03/05	2.00
1987/03/06	2.00
1987/03/07	2.00
1987/03/08	2.40
1987/03/09	2.80
1987/03/10	3.60
1987/03/11	3.80
1987/03/12	4.30
1987/03/13	3.80
1987/03/14	3.20
1987/03/15	3.20
1987/03/16	3.60
1987/03/17	3.40
1987/03/18	3.60
1987/03/19	3.40
1987/03/20	3.40
1987/03/21	3.60
1987/03/22	3.60
1987/03/23	3.60
1987/03/24	3.40
1987/03/25	3.40
1987/03/26	3.40
1987/03/27	3.60
1987/03/28	3.80
1987/03/29	3.80
1987/03/30	3.20
1987/03/31	3.20
1987/04/01	3.10
1987/04/02	2.90
1987/04/03	2.70
1987/04/04	2.70
1987/04/05	3.10
1987/04/06	3.10
1987/04/07	2.90
1987/04/08	2.90
1987/04/09	2.70
1987/04/10	2.70
1987/04/11	2.70
1987/04/12	2.70
1987/04/13	2.60
1987/04/14	2.60
1987/04/15	2.40
1987/04/16	2.30
1987/04/17	1.90
1987/04/18	2.00
1987/04/19	1.90
1987/04/20	1.60
1987/04/21	1.60
1987/04/22	3.80
1987/04/23	4.30
1987/04/24	5.40
1987/04/25	5.40
1987/04/26	4.60
1987/04/27	3.80
1987/04/28	3.20
1987/04/29	3.10
1987/04/30	3.10
1987/05/01	4.30
1987/05/02	4.10
1987/05/03	5.20
1987/05/04	7.50
1987/05/05	8.00
1987/05/06	11.30
1987/05/07	20.00
1987/05/08	23.50
1987/05/09	19.00
1987/05/10	15.20
1987/05/11	13.80
1987/05/12	14.50
1987/05/13	10.80
1987/05/14	8.30
1987/05/15	8.30
1987/05/16	8.00
1987/05/17	6.40
1987/05/18	4.10
1987/05/19	5.00
1987/05/20	7.00
1987/05/21	8.30
1987/05/22	8.00
1987/05/23	7.30
1987/05/24	6.60
1987/05/25	4.80
1987/05/26	4.40
1987/05/27	4.10
1987/05/28	4.30
1987/05/29	4.30
1987/05/30	3.60
1987/05/31	3.10
1987/06/01	3.80
1987/06/02	4.60
1987/06/03	4.40
1987/06/04	9.00
1987/06/05	7.70
1987/06/06	15.20
1987/06/07	13.00
1987/06/08	8.80
1987/06/09	9.20
1987/06/10	9.80
1987/06/11	11.80
1987/06/12	46.50
1987/06/13	30.10
1987/06/14	22.50
1987/06/15	20.00
1987/06/16	17.20
1987/06/17	16.50
1987/06/18	14.80
1987/06/19	12.00
1987/06/20	10.80
1987/06/21	9.20
1987/06/22	8.50
1987/06/23	8.00
1987/06/24	6.80
1987/06/25	6.40
1987/06/26	6.20
1987/06/27	5.80
1987/06/28	5.40
1987/06/29	5.20
1987/06/30	5.20
1987/07/01	5.40
1987/07/02	5.60
1987/07/03	6.00
1987/07/04	6.00
1987/07/05	5.80
1987/07/06	5.40
1987/07/07	6.00
1987/07/08	6.00
1987/07/09	6.20
1987/07/10	5.80
1987/07/11	5.60
1987/07/12	5.80
1987/07/13	5.60
1987/07/14	5.40
1987/07/15	5.40
1987/07/16	5.00
1987/07/17	4.80
1987/07/18	4.80
1987/07/19	4.80
1987/07/20	5.00
1987/07/21	6.60
1987/07/22	7.70
1987/07/23	7.50
1987/07/24	7.00
1987/07/25	6.80
1987/07/26	6.80
1987/07/27	6.60
1987/07/28	6.00
1987/07/29	6.20
1987/07/30	6.80
1987/07/31	7.30
1987/08/01	7.50
1987/08/02	7.70
1987/08/03	7.50
1987/08/04	7.30
1987/08/05	7.00
1987/08/06	6.00
1987/08/07	6.20
1987/08/08	6.40
1987/08/09	6.20
1987/08/10	6.20
1987/08/11	6.60
1987/08/12	6.00
1987/08/13	12.00
1987/08/14	19.00
1987/08/15	20.00
1987/08/16	21.00
1987/08/17	29.50
1987/08/18	290.70
1987/08/19	646.40
1987/08/20	511.50
1987/08/21	180.00
1987/08/22	83.50
1987/08/23	189.00
1987/08/24	1120.00
1987/08/25	1164.80
1987/08/26	738.10
1987/08/27	337.00
1987/08/28	183.00
1987/08/29	119.50
1987/08/30	81.00
1987/08/31	75.70
1987/09/01	60.80
1987/09/02	45.80
1987/09/03	41.90
1987/09/04	37.20
1987/09/05	33.90
1987/09/06	55.60
1987/09/07	67.50
1987/09/08	67.50
1987/09/09	69.00
1987/09/10	66.00
1987/09/11	117.70
1987/09/12	115.00
1987/09/13	127.60
1987/09/14	190.00
1987/09/15	260.40
1987/09/16	364.20
1987/09/17	313.50
1987/09/18	153.00
1987/09/19	142.90
1987/09/20	161.00
1987/09/21	266.40
1987/09/22	230.70
1987/09/23	172.00
1987/09/24	132.10
1987/09/25	122.20
1987/09/26	183.00
1987/09/27	523.50
1987/09/28	603.20
1987/09/29	460.50
1987/09/30	249.60
1987/10/01	167.00
1987/10/02	144.70
1987/10/03	176.00
1987/10/04	182.00
1987/10/05	139.30
1987/10/06	93.70
1987/10/07	88.60
1987/10/08	64.10
1987/10/09	134.80
1987/10/10	277.20
1987/10/11	216.40
1987/10/12	123.10
1987/10/13	78.80
1987/10/14	68.20
1987/10/15	56.90
1987/10/16	48.50
1987/10/17	43.30
1987/10/18	45.80
1987/10/19	41.90
1987/10/20	51.10
1987/10/21	58.80
1987/10/22	62.10
1987/10/23	62.80
1987/10/24	48.50
1987/10/25	43.90
1987/10/26	47.20
1987/10/27	37.20
1987/10/28	34.50
1987/10/29	31.20
1987/10/30	27.50
1987/10/31	23.00
1987/11/01	22.50
1987/11/02	22.00
1987/11/03	28.00
1987/11/04	28.00
1987/11/05	28.00
1987/11/06	28.00
1987/11/07	25.50
1987/11/08	25.50
1987/11/09	56.90
1987/11/10	112.50
1987/11/11	64.10
1987/11/12	48.50
1987/11/13	46.50
1987/11/14	35.10
1987/11/15	36.10
1987/11/16	93.70
1987/11/17	67.50
1987/11/18	41.30
1987/11/19	40.60
1987/11/20	38.40
1987/11/21	50.40
1987/11/22	31.20
1987/11/23	35.10
1987/11/24	28.50
1987/11/25	32.30
1987/11/26	20.00
1987/11/27	22.50
1987/11/28	23.50
1987/11/29	22.50
1987/11/30	21.00
1987/12/01	20.00
1987/12/02	18.60
1987/12/03	18.00
1987/12/04	17.20
1987/12/05	16.20
1987/12/06	15.20
1987/12/07	14.80
1987/12/08	14.80
1987/12/09	13.80
1987/12/10	12.70
1987/12/11	12.00
1987/12/12	11.80
1987/12/13	12.00
1987/12/14	10.00
1987/12/15	8.30
1987/12/16	8.50
1987/12/17	7.50
1987/12/18	5.80
1987/12/19	5.80
1987/12/20	5.60
1987/12/21	5.20
1987/12/22	5.20
1987/12/23	5.00
1987/12/24	4.80
1987/12/25	4.80
1987/12/26	4.80
1987/12/27	5.00
1987/12/28	4.80
1987/12/29	5.00
1987/12/30	4.80
1987/12/31	4.70
#===========================================
# Number of observations = 365 / 365
# Average = 45.50