1985/01/01	13.10
1985/01/02	13.10
1985/01/03	13.10
1985/01/04	12.80
1985/01/05	12.80
1985/01/06	12.80
1985/01/07	12.80
1985/01/08	12.80
1985/01/09	12.50
1985/01/10	12.50
1985/01/11	12.50
1985/01/12	12.50
1985/01/13	12.20
1985/01/14	12.20
1985/01/15	12.20
1985/01/16	12.20
1985/01/17	12.20
1985/01/18	12.20
1985/01/19	11.90
1985/01/20	11.90
1985/01/21	11.90
1985/01/22	11.60
1985/01/23	11.60
1985/01/24	11.60
1985/01/25	11.60
1985/01/26	11.60
1985/01/27	11.60
1985/01/28	11.60
1985/01/29	11.60
1985/01/30	11.60
1985/01/31	11.60
1985/02/01	11.60
1985/02/02	11.60
1985/02/03	11.30
1985/02/04	11.30
1985/02/05	11.30
1985/02/06	11.00
1985/02/07	11.00
1985/02/08	11.00
1985/02/09	10.70
1985/02/10	10.70
1985/02/11	10.70
1985/02/12	10.70
1985/02/13	10.70
1985/02/14	10.70
1985/02/15	10.40
1985/02/16	10.40
1985/02/17	10.10
1985/02/18	11.00
1985/02/19	11.60
1985/02/20	11.00
1985/02/21	10.10
1985/02/22	8.00
1985/02/23	10.10
1985/02/24	10.40
1985/02/25	10.40
1985/02/26	10.10
1985/02/27	10.10
1985/02/28	9.80
1985/03/01	9.80
1985/03/02	9.80
1985/03/03	9.50
1985/03/04	9.50
1985/03/05	9.50
1985/03/06	9.50
1985/03/07	9.80
1985/03/08	9.80
1985/03/09	9.50
1985/03/10	9.50
1985/03/11	9.50
1985/03/12	9.20
1985/03/13	9.20
1985/03/14	9.20
1985/03/15	9.20
1985/03/16	9.20
1985/03/17	9.20
1985/03/18	9.20
1985/03/19	9.20
1985/03/20	9.20
1985/03/21	9.20
1985/03/22	8.90
1985/03/23	10.10
1985/03/24	9.80
1985/03/25	9.50
1985/03/26	9.20
1985/03/27	8.90
1985/03/28	8.90
1985/03/29	8.90
1985/03/30	9.20
1985/03/31	10.70
1985/04/01	11.00
1985/04/02	11.60
1985/04/03	12.50
1985/04/04	15.40
1985/04/05	17.90
1985/04/06	11.60
1985/04/07	10.10
1985/04/08	9.50
1985/04/09	8.90
1985/04/10	8.60
1985/04/11	8.30
1985/04/12	8.30
1985/04/13	8.60
1985/04/14	9.20
1985/04/15	11.00
1985/04/16	12.80
1985/04/17	14.35
1985/04/18	14.00
1985/04/19	12.80
1985/04/20	10.70
1985/04/21	10.70
1985/04/22	13.70
1985/04/23	16.80
1985/04/24	13.40
1985/04/25	11.90
1985/04/26	21.10
1985/04/27	16.80
1985/04/28	15.05
1985/04/29	13.70
1985/04/30	12.20
1985/05/01	17.90
1985/05/02	16.45
1985/05/03	14.70
1985/05/04	16.10
1985/05/05	13.40
1985/05/06	11.90
1985/05/07	11.30
1985/05/08	11.00
1985/05/09	10.70
1985/05/10	11.00
1985/05/11	10.70
1985/05/12	11.00
1985/05/13	11.30
1985/05/14	11.60
1985/05/15	12.50
1985/05/16	11.00
1985/05/17	10.40
1985/05/18	12.50
1985/05/19	13.40
1985/05/20	12.80
1985/05/21	13.40
1985/05/22	12.80
1985/05/23	12.20
1985/05/24	11.90
1985/05/25	13.10
1985/05/26	13.40
1985/05/27	14.00
1985/05/28	14.35
1985/05/29	12.80
1985/05/30	21.10
1985/05/31	21.95
1985/06/01	20.30
1985/06/02	29.15
1985/06/03	22.85
1985/06/04	19.50
1985/06/05	16.80
1985/06/06	16.10
1985/06/07	13.70
1985/06/08	12.80
1985/06/09	12.50
1985/06/10	12.20
1985/06/11	11.90
1985/06/12	11.60
1985/06/13	11.90
1985/06/14	12.80
1985/06/15	12.50
1985/06/16	12.50
1985/06/17	11.90
1985/06/18	11.90
1985/06/19	28.25
1985/06/20	24.20
1985/06/21	37.50
1985/06/22	23.30
1985/06/23	21.10
1985/06/24	19.10
1985/06/25	16.80
1985/06/26	15.05
1985/06/27	14.00
1985/06/28	15.05
1985/06/29	16.10
1985/06/30	30.50
1985/07/01	27.35
1985/07/02	23.30
1985/07/03	19.10
1985/07/04	17.50
1985/07/05	17.15
1985/07/06	16.45
1985/07/07	16.10
1985/07/08	15.75
1985/07/09	16.80
1985/07/10	16.45
1985/07/11	17.50
1985/07/12	21.10
1985/07/13	39.50
1985/07/14	131.00
1985/07/15	54.95
1985/07/16	42.90
1985/07/17	37.00
1985/07/18	37.50
1985/07/19	38.50
1985/07/20	39.00
1985/07/21	37.50
1985/07/22	85.90
1985/07/23	64.40
1985/07/24	58.85
1985/07/25	45.90
1985/07/26	34.50
1985/07/27	33.00
1985/07/28	36.50
1985/07/29	52.35
1985/07/30	42.90
1985/07/31	39.50
1985/08/01	35.50
1985/08/02	38.50
1985/08/03	37.00
1985/08/04	42.30
1985/08/05	44.10
1985/08/06	42.30
1985/08/07	40.50
1985/08/08	37.50
1985/08/09	35.50
1985/08/10	37.00
1985/08/11	38.50
1985/08/12	38.50
1985/08/13	32.00
1985/08/14	30.50
1985/08/15	65.80
1985/08/16	437.60
1985/08/17	106.30
1985/08/18	91.90
1985/08/19	97.30
1985/08/20	87.60
1985/08/21	76.10
1985/08/22	89.30
1985/08/23	81.70
1985/08/24	82.50
1985/08/25	74.50
1985/08/26	73.70
1985/08/27	65.80
1985/08/28	60.20
1985/08/29	64.40
1985/08/30	86.75
1985/08/31	93.70
1985/09/01	84.20
1985/09/02	84.20
1985/09/03	74.50
1985/09/04	68.10
1985/09/05	59.50
1985/09/06	46.50
1985/09/07	41.10
1985/09/08	38.00
1985/09/09	39.50
1985/09/10	40.50
1985/09/11	36.00
1985/09/12	58.20
1985/09/13	60.20
1985/09/14	66.50
1985/09/15	72.90
1985/09/16	54.30
1985/09/17	44.10
1985/09/18	38.50
1985/09/19	35.00
1985/09/20	34.50
1985/09/21	32.00
1985/09/22	30.05
1985/09/23	32.50
1985/09/24	35.00
1985/09/25	37.00
1985/09/26	41.10
1985/09/27	35.00
1985/09/28	32.00
1985/09/29	36.50
1985/09/30	44.70
1985/10/01	31.00
1985/10/02	29.15
1985/10/03	27.35
1985/10/04	25.55
1985/10/05	25.10
1985/10/06	23.75
1985/10/07	22.85
1985/10/08	22.40
1985/10/09	21.95
1985/10/10	21.50
1985/10/11	21.50
1985/10/12	20.70
1985/10/13	20.30
1985/10/14	20.30
1985/10/15	20.70
1985/10/16	20.30
1985/10/17	19.50
1985/10/18	21.95
1985/10/19	22.85
1985/10/20	30.05
1985/10/21	35.00
1985/10/22	28.70
1985/10/23	24.65
1985/10/24	23.30
1985/10/25	24.20
1985/10/26	22.85
1985/10/27	24.65
1985/10/28	22.40
1985/10/29	21.10
1985/10/30	19.90
1985/10/31	21.50
1985/11/01	29.15
1985/11/02	25.55
1985/11/03	23.30
1985/11/04	23.30
1985/11/05	21.10
1985/11/06	19.50
1985/11/07	19.10
1985/11/08	18.30
1985/11/09	17.90
1985/11/10	17.50
1985/11/11	17.15
1985/11/12	17.15
1985/11/13	18.30
1985/11/14	18.30
1985/11/15	18.30
1985/11/16	28.25
1985/11/17	46.50
1985/11/18	41.70
1985/11/19	29.15
1985/11/20	28.25
1985/11/21	30.50
1985/11/22	31.50
1985/11/23	27.80
1985/11/24	25.10
1985/11/25	23.30
1985/11/26	21.10
1985/11/27	20.70
1985/11/28	20.30
1985/11/29	19.50
1985/11/30	19.50
1985/12/01	25.55
1985/12/02	19.50
1985/12/03	18.70
1985/12/04	17.90
1985/12/05	17.50
1985/12/06	17.15
1985/12/07	16.80
1985/12/08	16.45
1985/12/09	16.10
1985/12/10	15.75
1985/12/11	15.75
1985/12/12	15.40
1985/12/13	15.40
1985/12/14	15.05
1985/12/15	15.05
1985/12/16	15.05
1985/12/17	14.70
1985/12/18	14.70
1985/12/19	14.35
1985/12/20	14.35
1985/12/21	14.35
1985/12/22	14.00
1985/12/23	14.00
1985/12/24	13.70
1985/12/25	13.40
1985/12/26	13.40
1985/12/27	13.40
1985/12/28	13.40
1985/12/29	13.40
1985/12/30	13.10
1985/12/31	12.80
#===========================================
# Number of observations = 365 / 365
# Average = 24.92