1987/01/01	8.00
1987/01/02	7.80
1987/01/03	7.80
1987/01/04	7.80
1987/01/05	7.60
1987/01/06	7.40
1987/01/07	7.40
1987/01/08	7.00
1987/01/09	7.00
1987/01/10	6.80
1987/01/11	6.80
1987/01/12	6.60
1987/01/13	6.60
1987/01/14	6.60
1987/01/15	6.40
1987/01/16	6.20
1987/01/17	6.00
1987/01/18	6.00
1987/01/19	5.80
1987/01/20	5.80
1987/01/21	5.80
1987/01/22	5.60
1987/01/23	5.40
1987/01/24	5.20
1987/01/25	5.00
1987/01/26	5.00
1987/01/27	5.00
1987/01/28	4.80
1987/01/29	4.80
1987/01/30	4.80
1987/01/31	4.80
1987/02/01	4.60
1987/02/02	4.60
1987/02/03	4.60
1987/02/04	4.60
1987/02/05	4.60
1987/02/06	4.40
1987/02/07	4.40
1987/02/08	4.40
1987/02/09	4.40
1987/02/10	4.20
1987/02/11	4.20
1987/02/12	4.20
1987/02/13	4.20
1987/02/14	3.80
1987/02/15	3.80
1987/02/16	3.80
1987/02/17	3.80
1987/02/18	3.80
1987/02/19	3.60
1987/02/20	3.60
1987/02/21	3.40
1987/02/22	3.40
1987/02/23	3.40
1987/02/24	3.40
1987/02/25	3.40
1987/02/26	3.60
1987/02/27	4.00
1987/02/28	4.40
1987/03/01	4.20
1987/03/02	4.20
1987/03/03	4.00
1987/03/04	3.80
1987/03/05	3.80
1987/03/06	3.80
1987/03/07	4.20
1987/03/08	4.20
1987/03/09	4.20
1987/03/10	4.20
1987/03/11	4.20
1987/03/12	4.20
1987/03/13	4.20
1987/03/14	4.20
1987/03/15	4.20
1987/03/16	4.20
1987/03/17	4.20
1987/03/18	4.20
1987/03/19	4.00
1987/03/20	3.80
1987/03/21	3.80
1987/03/22	3.60
1987/03/23	3.40
1987/03/24	3.40
1987/03/25	3.40
1987/03/26	3.20
1987/03/27	3.00
1987/03/28	3.00
1987/03/29	3.00
1987/03/30	3.00
1987/03/31	3.00
1987/04/01	3.00
1987/04/02	3.00
1987/04/03	3.20
1987/04/04	3.60
1987/04/05	3.60
1987/04/06	3.60
1987/04/07	3.60
1987/04/08	3.20
1987/04/09	3.00
1987/04/10	2.60
1987/04/11	2.20
1987/04/12	2.20
1987/04/13	2.20
1987/04/14	2.20
1987/04/15	2.20
1987/04/16	2.20
1987/04/17	2.00
1987/04/18	1.80
1987/04/19	1.80
1987/04/20	1.80
1987/04/21	2.00
1987/04/22	2.40
1987/04/23	2.60
1987/04/24	2.60
1987/04/25	2.40
1987/04/26	2.40
1987/04/27	2.40
1987/04/28	2.40
1987/04/29	3.00
1987/04/30	4.80
1987/05/01	5.40
1987/05/02	5.00
1987/05/03	4.60
1987/05/04	4.20
1987/05/05	3.80
1987/05/06	3.80
1987/05/07	4.40
1987/05/08	4.80
1987/05/09	7.30
1987/05/10	8.00
1987/05/11	13.10
1987/05/12	15.80
1987/05/13	13.70
1987/05/14	11.00
1987/05/15	10.00
1987/05/16	10.30
1987/05/17	9.00
1987/05/18	7.50
1987/05/19	6.50
1987/05/20	5.60
1987/05/21	5.60
1987/05/22	5.20
1987/05/23	4.80
1987/05/24	4.40
1987/05/25	4.00
1987/05/26	4.00
1987/05/27	4.60
1987/05/28	4.40
1987/05/29	4.20
1987/05/30	4.20
1987/05/31	3.80
1987/06/01	3.60
1987/06/02	4.00
1987/06/03	5.20
1987/06/04	5.60
1987/06/05	4.80
1987/06/06	4.40
1987/06/07	5.00
1987/06/08	5.60
1987/06/09	9.20
1987/06/10	16.70
1987/06/11	25.00
1987/06/12	25.90
1987/06/13	21.40
1987/06/14	14.90
1987/06/15	14.00
1987/06/16	23.40
1987/06/17	22.20
1987/06/18	21.80
1987/06/19	26.80
1987/06/20	29.00
1987/06/21	23.00
1987/06/22	19.00
1987/06/23	18.20
1987/06/24	16.40
1987/06/25	13.10
1987/06/26	10.80
1987/06/27	9.20
1987/06/28	8.70
1987/06/29	11.00
1987/06/30	8.70
1987/07/01	7.30
1987/07/02	6.20
1987/07/03	5.80
1987/07/04	5.40
1987/07/05	5.00
1987/07/06	4.80
1987/07/07	5.00
1987/07/08	5.80
1987/07/09	5.80
1987/07/10	6.20
1987/07/11	6.70
1987/07/12	6.20
1987/07/13	5.60
1987/07/14	5.00
1987/07/15	4.60
1987/07/16	4.40
1987/07/17	4.20
1987/07/18	4.00
1987/07/19	4.20
1987/07/20	4.20
1987/07/21	4.00
1987/07/22	4.00
1987/07/23	4.00
1987/07/24	4.00
1987/07/25	3.80
1987/07/26	3.80
1987/07/27	4.40
1987/07/28	5.80
1987/07/29	5.60
1987/07/30	5.60
1987/07/31	5.80
1987/08/01	5.80
1987/08/02	5.00
1987/08/03	5.40
1987/08/04	5.80
1987/08/05	5.20
1987/08/06	4.80
1987/08/07	4.80
1987/08/08	4.60
1987/08/09	4.40
1987/08/10	5.20
1987/08/11	5.80
1987/08/12	6.50
1987/08/13	7.00
1987/08/14	6.20
1987/08/15	6.50
1987/08/16	6.00
1987/08/17	6.00
1987/08/18	22.60
1987/08/19	75.50
1987/08/20	533.00
1987/08/21	695.40
1987/08/22	458.30
1987/08/23	234.50
1987/08/24	155.20
1987/08/25	663.00
1987/08/26	1035.20
1987/08/27	1012.80
1987/08/28	654.60
1987/08/29	320.30
1987/08/30	212.00
1987/08/31	154.40
1987/09/01	121.80
1987/09/02	112.00
1987/09/03	105.20
1987/09/04	88.40
1987/09/05	76.10
1987/09/06	65.80
1987/09/07	67.00
1987/09/08	135.20
1987/09/09	186.10
1987/09/10	182.70
1987/09/11	186.10
1987/09/12	148.80
1987/09/13	148.80
1987/09/14	176.80
1987/09/15	307.10
1987/09/16	329.10
1987/09/17	274.00
1987/09/18	260.00
1987/09/19	296.50
1987/09/20	250.00
1987/09/21	398.40
1987/09/22	650.40
1987/09/23	581.80
1987/09/24	374.10
1987/09/25	309.30
1987/09/26	247.00
1987/09/27	318.10
1987/09/28	735.70
1987/09/29	840.50
1987/09/30	718.30
1987/10/01	457.00
1987/10/02	303.90
1987/10/03	230.70
1987/10/04	227.90
1987/10/05	269.00
1987/10/06	258.00
1987/10/07	198.50
1987/10/08	153.60
1987/10/09	148.00
1987/10/10	153.60
1987/10/11	226.00
1987/10/12	306.00
1987/10/13	237.40
1987/10/14	166.60
1987/10/15	128.00
1987/10/16	109.80
1987/10/17	98.50
1987/10/18	89.80
1987/10/19	80.70
1987/10/20	76.80
1987/10/21	72.20
1987/10/22	84.20
1987/10/23	89.10
1987/10/24	97.00
1987/10/25	91.20
1987/10/26	83.50
1987/10/27	76.10
1987/10/28	72.80
1987/10/29	70.20
1987/10/30	64.60
1987/10/31	57.40
1987/11/01	53.90
1987/11/02	49.50
1987/11/03	46.20
1987/11/04	45.10
1987/11/05	49.50
1987/11/06	52.80
1987/11/07	52.20
1987/11/08	53.90
1987/11/09	65.80
1987/11/10	72.80
1987/11/11	74.80
1987/11/12	125.60
1987/11/13	107.50
1987/11/14	84.20
1987/11/15	74.80
1987/11/16	72.80
1987/11/17	70.20
1987/11/18	92.60
1987/11/19	100.80
1987/11/20	80.00
1987/11/21	70.20
1987/11/22	66.40
1987/11/23	63.40
1987/11/24	64.60
1987/11/25	52.20
1987/11/26	51.10
1987/11/27	47.90
1987/11/28	47.30
1987/11/29	42.00
1987/11/30	42.00
1987/12/01	40.00
1987/12/02	38.00
1987/12/03	36.50
1987/12/04	34.50
1987/12/05	32.60
1987/12/06	30.90
1987/12/07	30.00
1987/12/08	29.00
1987/12/09	27.70
1987/12/10	26.80
1987/12/11	25.40
1987/12/12	24.60
1987/12/13	23.80
1987/12/14	23.00
1987/12/15	21.80
1987/12/16	20.60
1987/12/17	19.40
1987/12/18	17.40
1987/12/19	15.80
1987/12/20	14.90
1987/12/21	13.40
1987/12/22	12.50
1987/12/23	12.20
1987/12/24	11.30
1987/12/25	10.50
1987/12/26	10.30
1987/12/27	9.80
1987/12/28	9.80
1987/12/29	9.80
1987/12/30	9.50
1987/12/31	9.20
#===========================================
# Number of observations = 365 / 365
# Average = 64.94