1987/01/01	10.37
1987/01/02	10.37
1987/01/03	10.13
1987/01/04	9.90
1987/01/05	9.90
1987/01/06	9.67
1987/01/07	9.43
1987/01/08	9.20
1987/01/09	8.97
1987/01/10	8.97
1987/01/11	8.97
1987/01/12	8.73
1987/01/13	8.73
1987/01/14	8.50
1987/01/15	8.50
1987/01/16	8.27
1987/01/17	8.03
1987/01/18	7.80
1987/01/19	7.80
1987/01/20	7.33
1987/01/21	7.10
1987/01/22	7.10
1987/01/23	6.87
1987/01/24	6.87
1987/01/25	6.63
1987/01/26	6.87
1987/01/27	6.87
1987/01/28	6.63
1987/01/29	6.63
1987/01/30	6.40
1987/01/31	6.40
1987/02/01	6.17
1987/02/02	6.17
1987/02/03	5.93
1987/02/04	5.70
1987/02/05	5.47
1987/02/06	5.47
1987/02/07	5.47
1987/02/08	5.47
1987/02/09	5.23
1987/02/10	5.23
1987/02/11	5.23
1987/02/12	5.00
1987/02/13	5.00
1987/02/14	4.90
1987/02/15	4.80
1987/02/16	4.80
1987/02/17	4.70
1987/02/18	4.70
1987/02/19	4.70
1987/02/20	4.60
1987/02/21	4.50
1987/02/22	4.70
1987/02/23	4.90
1987/02/24	4.80
1987/02/25	4.80
1987/02/26	5.93
1987/02/27	5.93
1987/02/28	5.23
1987/03/01	5.00
1987/03/02	4.90
1987/03/03	5.23
1987/03/04	5.23
1987/03/05	5.23
1987/03/06	5.23
1987/03/07	5.70
1987/03/08	6.17
1987/03/09	6.40
1987/03/10	6.63
1987/03/11	6.63
1987/03/12	6.17
1987/03/13	5.70
1987/03/14	5.23
1987/03/15	5.47
1987/03/16	5.93
1987/03/17	5.93
1987/03/18	6.17
1987/03/19	5.70
1987/03/20	4.90
1987/03/21	4.90
1987/03/22	4.80
1987/03/23	4.70
1987/03/24	4.80
1987/03/25	4.70
1987/03/26	4.60
1987/03/27	4.50
1987/03/28	4.50
1987/03/29	4.50
1987/03/30	4.50
1987/03/31	4.40
1987/04/01	2.10
1987/04/02	2.40
1987/04/03	2.60
1987/04/04	2.90
1987/04/05	2.40
1987/04/06	2.10
1987/04/07	1.80
1987/04/08	1.60
1987/04/09	1.60
1987/04/10	1.40
1987/04/11	1.40
1987/04/12	1.40
1987/04/13	1.30
1987/04/14	1.20
1987/04/15	1.20
1987/04/16	1.20
1987/04/17	1.20
1987/04/18	1.50
1987/04/19	1.60
1987/04/20	2.20
1987/04/21	2.10
1987/04/22	1.90
1987/04/23	2.20
1987/04/24	2.10
1987/04/25	1.90
1987/04/26	1.90
1987/04/27	2.40
1987/04/28	2.40
1987/04/29	4.30
1987/04/30	5.00
1987/05/01	4.80
1987/05/02	4.10
1987/05/03	3.80
1987/05/04	3.30
1987/05/05	3.00
1987/05/06	3.80
1987/05/07	3.50
1987/05/08	4.40
1987/05/09	7.90
1987/05/10	8.30
1987/05/11	16.60
1987/05/12	15.10
1987/05/13	11.70
1987/05/14	10.00
1987/05/15	9.50
1987/05/16	9.80
1987/05/17	7.90
1987/05/18	6.80
1987/05/19	5.80
1987/05/20	5.40
1987/05/21	5.20
1987/05/22	4.80
1987/05/23	4.00
1987/05/24	3.30
1987/05/25	3.20
1987/05/26	4.40
1987/05/27	3.80
1987/05/28	4.00
1987/05/29	3.80
1987/05/30	3.60
1987/05/31	3.50
1987/06/01	2.40
1987/06/02	2.60
1987/06/03	2.90
1987/06/04	4.00
1987/06/05	4.00
1987/06/06	4.00
1987/06/07	4.80
1987/06/08	7.00
1987/06/09	10.00
1987/06/10	23.40
1987/06/11	25.70
1987/06/12	26.20
1987/06/13	17.40
1987/06/14	13.40
1987/06/15	15.50
1987/06/16	24.30
1987/06/17	21.20
1987/06/18	23.00
1987/06/19	30.20
1987/06/20	26.60
1987/06/21	23.00
1987/06/22	17.40
1987/06/23	19.40
1987/06/24	15.50
1987/06/25	11.70
1987/06/26	9.80
1987/06/27	8.30
1987/06/28	10.30
1987/06/29	10.00
1987/06/30	8.10
1987/07/01	6.60
1987/07/02	6.20
1987/07/03	5.60
1987/07/04	5.00
1987/07/05	4.40
1987/07/06	4.10
1987/07/07	5.20
1987/07/08	5.80
1987/07/09	6.20
1987/07/10	6.80
1987/07/11	6.60
1987/07/12	5.80
1987/07/13	5.20
1987/07/14	4.40
1987/07/15	4.30
1987/07/16	4.10
1987/07/17	3.80
1987/07/18	3.80
1987/07/19	4.10
1987/07/20	3.80
1987/07/21	3.50
1987/07/22	3.30
1987/07/23	4.00
1987/07/24	3.80
1987/07/25	3.80
1987/07/26	3.80
1987/07/27	5.80
1987/07/28	6.00
1987/07/29	5.60
1987/07/30	5.60
1987/07/31	6.00
1987/08/01	5.20
1987/08/02	4.40
1987/08/03	5.60
1987/08/04	6.00
1987/08/05	4.80
1987/08/06	4.80
1987/08/07	4.80
1987/08/08	4.30
1987/08/09	3.80
1987/08/10	4.80
1987/08/11	6.40
1987/08/12	6.20
1987/08/13	6.80
1987/08/14	7.20
1987/08/15	5.80
1987/08/16	5.60
1987/08/17	7.00
1987/08/18	45.30
1987/08/19	140.00
1987/08/20	683.20
1987/08/21	666.40
1987/08/22	386.80
1987/08/23	211.60
1987/08/24	180.40
1987/08/25	1012.20
1987/08/26	1609.00
1987/08/27	1372.40
1987/08/28	559.00
1987/08/29	310.00
1987/08/30	220.90
1987/08/31	164.20
1987/09/01	128.50
1987/09/02	122.80
1987/09/03	111.70
1987/09/04	95.00
1987/09/05	80.00
1987/09/06	69.20
1987/09/07	80.00
1987/09/08	179.00
1987/09/09	219.40
1987/09/10	227.30
1987/09/11	189.20
1987/09/12	156.60
1987/09/13	170.90
1987/09/14	211.60
1987/09/15	365.80
1987/09/16	407.80
1987/09/17	446.50
1987/09/18	444.20
1987/09/19	292.00
1987/09/20	278.00
1987/09/21	481.00
1987/09/22	700.00
1987/09/23	519.00
1987/09/24	359.50
1987/09/25	315.40
1987/09/26	266.00
1987/09/27	403.60
1987/09/28	860.40
1987/09/29	895.60
1987/09/30	677.60
1987/10/01	407.80
1987/10/02	302.80
1987/10/03	247.30
1987/10/04	264.30
1987/10/05	299.20
1987/10/06	274.50
1987/10/07	217.80
1987/10/08	160.40
1987/10/09	161.70
1987/10/10	170.90
1987/10/11	292.00
1987/10/12	324.40
1987/10/13	235.60
1987/10/14	169.60
1987/10/15	128.50
1987/10/16	111.70
1987/10/17	104.40
1987/10/18	95.00
1987/10/19	84.00
1987/10/20	79.00
1987/10/21	75.20
1987/10/22	95.00
1987/10/23	101.20
1987/10/24	102.30
1987/10/25	95.00
1987/10/26	86.00
1987/10/27	81.00
1987/10/28	77.00
1987/10/29	73.50
1987/10/30	65.90
1987/10/31	59.50
1987/11/01	55.80
1987/11/02	49.00
1987/11/03	46.00
1987/11/04	46.00
1987/11/05	54.30
1987/11/06	55.00
1987/11/07	54.30
1987/11/08	57.30
1987/11/09	70.90
1987/11/10	78.00
1987/11/11	92.00
1987/11/12	140.00
1987/11/13	108.60
1987/11/14	87.00
1987/11/15	80.00
1987/11/16	76.00
1987/11/17	73.50
1987/11/18	110.70
1987/11/19	103.30
1987/11/20	80.00
1987/11/21	73.50
1987/11/22	68.30
1987/11/23	67.50
1987/11/24	61.90
1987/11/25	54.30
1987/11/26	49.70
1987/11/27	49.00
1987/11/28	45.30
1987/11/29	42.60
1987/11/30	40.60
1987/12/01	38.00
1987/12/02	36.20
1987/12/03	34.40
1987/12/04	33.20
1987/12/05	32.00
1987/12/06	31.10
1987/12/07	29.70
1987/12/08	28.40
1987/12/09	27.50
1987/12/10	26.60
1987/12/11	26.20
1987/12/12	24.80
1987/12/13	23.40
1987/12/14	22.10
1987/12/15	21.20
1987/12/16	20.80
1987/12/17	19.00
1987/12/18	17.00
1987/12/19	15.50
1987/12/20	13.70
1987/12/21	12.40
1987/12/22	11.40
1987/12/23	11.10
1987/12/24	10.60
1987/12/25	9.80
1987/12/26	9.50
1987/12/27	9.00
1987/12/28	8.70
1987/12/29	8.70
1987/12/30	8.70
1987/12/31	8.50
#===========================================
# Number of observations = 365 / 365
# Average = 72.71