1988/01/01	10.10
1988/01/02	10.10
1988/01/03	10.10
1988/01/04	9.80
1988/01/05	9.80
1988/01/06	9.80
1988/01/07	9.50
1988/01/08	9.50
1988/01/09	9.20
1988/01/10	9.20
1988/01/11	9.20
1988/01/12	9.20
1988/01/13	9.20
1988/01/14	9.20
1988/01/15	8.90
1988/01/16	8.90
1988/01/17	8.90
1988/01/18	8.90
1988/01/19	8.90
1988/01/20	8.60
1988/01/21	8.60
1988/01/22	8.90
1988/01/23	8.90
1988/01/24	8.90
1988/01/25	8.90
1988/01/26	8.60
1988/01/27	8.90
1988/01/28	8.90
1988/01/29	8.90
1988/01/30	8.90
1988/01/31	8.90
1988/02/01	8.60
1988/02/02	8.60
1988/02/03	8.60
1988/02/04	8.60
1988/02/05	8.30
1988/02/06	8.30
1988/02/07	8.30
1988/02/08	8.30
1988/02/09	8.00
1988/02/10	8.00
1988/02/11	8.00
1988/02/12	8.00
1988/02/13	8.00
1988/02/14	7.75
1988/02/15	7.75
1988/02/16	7.75
1988/02/17	8.00
1988/02/18	8.00
1988/02/19	8.90
1988/02/20	8.60
1988/02/21	8.60
1988/02/22	8.30
1988/02/23	7.75
1988/02/24	7.75
1988/02/25	7.75
1988/02/26	7.75
1988/02/27	7.50
1988/02/28	7.50
1988/02/29	7.50
1988/03/01	7.25
1988/03/02	7.25
1988/03/03	7.00
1988/03/04	7.00
1988/03/05	7.00
1988/03/06	7.50
1988/03/07	8.60
1988/03/08	7.75
1988/03/09	7.50
1988/03/10	7.50
1988/03/11	7.50
1988/03/12	7.50
1988/03/13	7.25
1988/03/14	7.25
1988/03/15	7.00
1988/03/16	7.00
1988/03/17	7.00
1988/03/18	6.75
1988/03/19	6.75
1988/03/20	6.75
1988/03/21	6.75
1988/03/22	6.75
1988/03/23	6.75
1988/03/24	6.50
1988/03/25	6.50
1988/03/26	6.50
1988/03/27	6.50
1988/03/28	6.50
1988/03/29	6.25
1988/03/30	6.25
1988/03/31	6.25
1988/04/01	6.25
1988/04/02	5.75
1988/04/03	5.75
1988/04/04	5.75
1988/04/05	5.75
1988/04/06	5.75
1988/04/07	5.75
1988/04/08	5.75
1988/04/09	5.75
1988/04/10	5.75
1988/04/11	5.75
1988/04/12	6.00
1988/04/13	10.10
1988/04/14	9.50
1988/04/15	9.20
1988/04/16	8.00
1988/04/17	7.75
1988/04/18	7.00
1988/04/19	9.80
1988/04/20	9.50
1988/04/21	9.20
1988/04/22	8.90
1988/04/23	7.50
1988/04/24	9.50
1988/04/25	10.10
1988/04/26	11.00
1988/04/27	11.60
1988/04/28	11.90
1988/04/29	12.20
1988/04/30	12.50
1988/05/01	13.40
1988/05/02	12.50
1988/05/03	11.60
1988/05/04	17.15
1988/05/05	10.40
1988/05/06	16.10
1988/05/07	15.05
1988/05/08	13.70
1988/05/09	12.50
1988/05/10	11.30
1988/05/11	10.40
1988/05/12	9.50
1988/05/13	8.90
1988/05/14	9.50
1988/05/15	12.80
1988/05/16	44.10
1988/05/17	38.00
1988/05/18	27.35
1988/05/19	25.55
1988/05/20	25.55
1988/05/21	16.80
1988/05/22	14.70
1988/05/23	13.40
1988/05/24	11.90
1988/05/25	11.90
1988/05/26	11.60
1988/05/27	11.90
1988/05/28	12.50
1988/05/29	12.50
1988/05/30	11.00
1988/05/31	10.40
1988/06/01	15.40
1988/06/02	14.35
1988/06/03	12.20
1988/06/04	17.15
1988/06/05	33.00
1988/06/06	60.90
1988/06/07	25.10
1988/06/08	21.10
1988/06/09	18.70
1988/06/10	19.10
1988/06/11	17.50
1988/06/12	15.40
1988/06/13	14.35
1988/06/14	13.70
1988/06/15	13.40
1988/06/16	13.10
1988/06/17	13.40
1988/06/18	14.70
1988/06/19	19.90
1988/06/20	22.85
1988/06/21	22.40
1988/06/22	19.90
1988/06/23	16.10
1988/06/24	14.35
1988/06/25	13.40
1988/06/26	12.80
1988/06/27	12.50
1988/06/28	17.90
1988/06/29	23.75
1988/06/30	26.90
1988/07/01	19.10
1988/07/02	18.30
1988/07/03	17.90
1988/07/04	19.10
1988/07/05	26.45
1988/07/06	100.00
1988/07/07	111.00
1988/07/08	60.20
1988/07/09	58.20
1988/07/10	50.40
1988/07/11	47.80
1988/07/12	45.90
1988/07/13	43.50
1988/07/14	39.00
1988/07/15	35.00
1988/07/16	30.05
1988/07/17	28.70
1988/07/18	27.80
1988/07/19	26.90
1988/07/20	25.10
1988/07/21	24.20
1988/07/22	41.70
1988/07/23	58.85
1988/07/24	38.50
1988/07/25	32.50
1988/07/26	31.00
1988/07/27	30.05
1988/07/28	26.90
1988/07/29	25.55
1988/07/30	24.20
1988/07/31	28.70
1988/08/01	35.50
1988/08/02	33.00
1988/08/03	60.90
1988/08/04	111.00
1988/08/05	91.90
1988/08/06	58.85
1988/08/07	197.60
1988/08/08	262.00
1988/08/09	157.70
1988/08/10	156.60
1988/08/11	153.30
1988/08/12	124.00
1988/08/13	97.30
1988/08/14	152.20
1988/08/15	168.70
1988/08/16	111.00
1988/08/17	100.00
1988/08/18	75.30
1988/08/19	64.40
1988/08/20	62.30
1988/08/21	58.20
1988/08/22	51.05
1988/08/23	42.90
1988/08/24	40.00
1988/08/25	38.50
1988/08/26	37.00
1988/08/27	35.00
1988/08/28	33.50
1988/08/29	32.50
1988/08/30	33.50
1988/08/31	37.00
1988/09/01	34.50
1988/09/02	29.15
1988/09/03	27.35
1988/09/04	27.80
1988/09/05	27.80
1988/09/06	72.10
1988/09/07	37.00
1988/09/08	31.50
1988/09/09	28.70
1988/09/10	26.45
1988/09/11	28.70
1988/09/12	31.50
1988/09/13	27.80
1988/09/14	29.60
1988/09/15	28.70
1988/09/16	24.65
1988/09/17	26.90
1988/09/18	25.10
1988/09/19	23.30
1988/09/20	21.50
1988/09/21	21.95
1988/09/22	20.70
1988/09/23	19.10
1988/09/24	18.30
1988/09/25	18.30
1988/09/26	17.90
1988/09/27	17.90
1988/09/28	17.90
1988/09/29	17.90
1988/09/30	17.90
1988/10/01	17.50
1988/10/02	16.45
1988/10/03	16.45
1988/10/04	16.10
1988/10/05	21.10
1988/10/06	20.30
1988/10/07	20.30
1988/10/08	42.90
1988/10/09	25.10
1988/10/10	21.10
1988/10/11	19.10
1988/10/12	18.30
1988/10/13	17.15
1988/10/14	16.80
1988/10/15	17.90
1988/10/16	19.10
1988/10/17	17.90
1988/10/18	18.70
1988/10/19	18.70
1988/10/20	17.50
1988/10/21	16.45
1988/10/22	16.10
1988/10/23	15.75
1988/10/24	15.40
1988/10/25	15.05
1988/10/26	14.70
1988/10/27	14.35
1988/10/28	14.00
1988/10/29	14.00
1988/10/30	13.70
1988/10/31	13.40
1988/11/01	13.70
1988/11/02	13.40
1988/11/03	13.40
1988/11/04	13.10
1988/11/05	12.80
1988/11/06	12.80
1988/11/07	12.50
1988/11/08	12.50
1988/11/09	12.50
1988/11/10	12.20
1988/11/11	12.20
1988/11/12	11.90
1988/11/13	11.90
1988/11/14	11.90
1988/11/15	12.20
1988/11/16	12.20
1988/11/17	13.70
1988/11/18	13.40
1988/11/19	12.50
1988/11/20	12.20
1988/11/21	11.90
1988/11/22	11.60
1988/11/23	11.60
1988/11/24	11.60
1988/11/25	11.30
1988/11/26	11.00
1988/11/27	11.30
1988/11/28	11.00
1988/11/29	11.00
1988/11/30	11.00
1988/12/01	11.00
1988/12/02	11.00
1988/12/03	11.00
1988/12/04	10.70
1988/12/05	10.70
1988/12/06	10.70
1988/12/07	10.70
1988/12/08	10.40
1988/12/09	10.40
1988/12/10	10.40
1988/12/11	10.40
1988/12/12	10.10
1988/12/13	10.10
1988/12/14	9.80
1988/12/15	9.80
1988/12/16	9.80
1988/12/17	9.80
1988/12/18	9.50
1988/12/19	9.50
1988/12/20	9.50
1988/12/21	9.50
1988/12/22	9.50
1988/12/23	9.50
1988/12/24	9.50
1988/12/25	9.50
1988/12/26	9.20
1988/12/27	9.20
1988/12/28	9.20
1988/12/29	9.20
1988/12/30	8.90
1988/12/31	8.90
#===========================================
# Number of observations = 366 / 366
# Average = 21.80