1988/01/01	8.30
1988/01/02	8.30
1988/01/03	7.90
1988/01/04	7.40
1988/01/05	7.20
1988/01/06	7.40
1988/01/07	7.20
1988/01/08	7.20
1988/01/09	7.00
1988/01/10	7.00
1988/01/11	7.00
1988/01/12	6.80
1988/01/13	6.60
1988/01/14	6.60
1988/01/15	6.40
1988/01/16	6.40
1988/01/17	6.40
1988/01/18	5.80
1988/01/19	5.40
1988/01/20	5.00
1988/01/21	5.00
1988/01/22	4.80
1988/01/23	4.60
1988/01/24	4.40
1988/01/25	4.30
1988/01/26	4.30
1988/01/27	4.30
1988/01/28	4.10
1988/01/29	4.10
1988/01/30	4.00
1988/01/31	3.80
1988/02/01	3.80
1988/02/02	3.80
1988/02/03	3.80
1988/02/04	3.80
1988/02/05	3.80
1988/02/06	3.60
1988/02/07	3.50
1988/02/08	3.30
1988/02/09	3.30
1988/02/10	3.20
1988/02/11	3.20
1988/02/12	3.00
1988/02/13	3.00
1988/02/14	2.90
1988/02/15	2.90
1988/02/16	2.70
1988/02/17	2.60
1988/02/18	2.60
1988/02/19	2.90
1988/02/20	2.90
1988/02/21	2.70
1988/02/22	2.60
1988/02/23	2.70
1988/02/24	2.60
1988/02/25	2.70
1988/02/26	2.70
1988/02/27	2.60
1988/02/28	2.20
1988/02/29	2.20
1988/03/01	2.10
1988/03/02	1.90
1988/03/03	1.90
1988/03/04	1.90
1988/03/05	1.60
1988/03/06	1.50
1988/03/07	1.50
1988/03/08	1.40
1988/03/09	1.60
1988/03/10	1.50
1988/03/11	1.60
1988/03/12	1.50
1988/03/13	1.30
1988/03/14	1.20
1988/03/15	1.10
1988/03/16	1.10
1988/03/17	1.30
1988/03/18	1.10
1988/03/19	1.10
1988/03/20	1.10
1988/03/21	1.00
1988/03/22	0.90
1988/03/23	0.90
1988/03/24	0.80
1988/03/25	0.70
1988/03/26	0.70
1988/03/27	0.60
1988/03/28	0.50
1988/03/29	0.60
1988/03/30	0.50
1988/03/31	0.60
1988/04/01	0.88
1988/04/02	0.75
1988/04/03	0.75
1988/04/04	0.70
1988/04/05	0.70
1988/04/06	0.65
1988/04/07	0.75
1988/04/08	0.75
1988/04/09	0.60
1988/04/10	0.55
1988/04/11	0.60
1988/04/12	0.55
1988/04/13	0.80
1988/04/14	1.60
1988/04/15	1.52
1988/04/16	1.36
1988/04/17	1.36
1988/04/18	1.52
1988/04/19	1.93
1988/04/20	1.60
1988/04/21	1.71
1988/04/22	2.04
1988/04/23	2.48
1988/04/24	2.26
1988/04/25	1.93
1988/04/26	1.82
1988/04/27	1.44
1988/04/28	1.28
1988/04/29	1.36
1988/04/30	2.59
1988/05/01	8.07
1988/05/02	8.56
1988/05/03	9.38
1988/05/04	35.20
1988/05/05	44.20
1988/05/06	51.60
1988/05/07	39.40
1988/05/08	38.80
1988/05/09	38.20
1988/05/10	31.50
1988/05/11	26.50
1988/05/12	23.10
1988/05/13	18.60
1988/05/14	18.60
1988/05/15	21.30
1988/05/16	34.00
1988/05/17	68.50
1988/05/18	137.00
1988/05/19	145.10
1988/05/20	324.00
1988/05/21	244.00
1988/05/22	173.45
1988/05/23	118.30
1988/05/24	81.25
1988/05/25	65.10
1988/05/26	46.00
1988/05/27	54.40
1988/05/28	50.20
1988/05/29	31.50
1988/05/30	22.65
1988/05/31	20.85
1988/06/01	15.45
1988/06/02	13.35
1988/06/03	13.02
1988/06/04	31.50
1988/06/05	145.10
1988/06/06	224.80
1988/06/07	590.20
1988/06/08	585.00
1988/06/09	434.25
1988/06/10	318.60
1988/06/11	211.30
1988/06/12	143.75
1988/06/13	108.70
1988/06/14	85.50
1988/06/15	71.05
1988/06/16	69.35
1988/06/17	60.00
1988/06/18	60.00
1988/06/19	50.20
1988/06/20	57.20
1988/06/21	68.50
1988/06/22	60.00
1988/06/23	51.60
1988/06/24	47.40
1988/06/25	46.00
1988/06/26	38.80
1988/06/27	34.00
1988/06/28	34.60
1988/06/29	35.80
1988/06/30	34.60
1988/07/01	34.60
1988/07/02	37.00
1988/07/03	50.20
1988/07/04	65.10
1988/07/05	67.65
1988/07/06	67.65
1988/07/07	50.90
1988/07/08	44.20
1988/07/09	44.80
1988/07/10	46.70
1988/07/11	41.20
1988/07/12	41.80
1988/07/13	62.55
1988/07/14	82.95
1988/07/15	306.00
1988/07/16	649.30
1988/07/17	751.50
1988/07/18	603.40
1988/07/19	478.80
1988/07/20	526.80
1988/07/21	534.00
1988/07/22	353.25
1988/07/23	264.60
1988/07/24	202.60
1988/07/25	188.30
1988/07/26	186.95
1988/07/27	145.10
1988/07/28	118.30
1988/07/29	95.05
1988/07/30	84.65
1988/07/31	75.30
1988/08/01	70.20
1988/08/02	66.80
1988/08/03	64.25
1988/08/04	81.25
1988/08/05	101.35
1988/08/06	116.10
1988/08/07	253.80
1988/08/08	373.50
1988/08/09	226.40
1988/08/10	164.00
1988/08/11	137.00
1988/08/12	174.80
1988/08/13	271.80
1988/08/14	418.50
1988/08/15	507.60
1988/08/16	517.20
1988/08/17	569.40
1988/08/18	611.50
1988/08/19	438.75
1988/08/20	318.60
1988/08/21	273.60
1988/08/22	239.20
1988/08/23	255.60
1988/08/24	232.80
1988/08/25	189.65
1988/08/26	157.25
1988/08/27	135.90
1988/08/28	126.00
1988/08/29	126.00
1988/08/30	161.30
1988/08/31	212.75
1988/09/01	284.40
1988/09/02	228.00
1988/09/03	182.90
1988/09/04	141.05
1988/09/05	113.95
1988/09/06	107.65
1988/09/07	102.40
1988/09/08	101.35
1988/09/09	109.75
1988/09/10	150.50
1988/09/11	131.50
1988/09/12	106.60
1988/09/13	109.75
1988/09/14	113.95
1988/09/15	107.65
1988/09/16	118.30
1988/09/17	176.15
1988/09/18	173.45
1988/09/19	173.45
1988/09/20	150.50
1988/09/21	137.00
1988/09/22	121.60
1988/09/23	102.40
1988/09/24	88.90
1988/09/25	79.55
1988/09/26	72.75
1988/09/27	70.20
1988/09/28	67.65
1988/09/29	62.55
1988/09/30	60.85
1988/10/01	64.25
1988/10/02	64.25
1988/10/03	70.20
1988/10/04	87.20
1988/10/05	82.95
1988/10/06	77.85
1988/10/07	105.55
1988/10/08	127.10
1988/10/09	106.60
1988/10/10	173.45
1988/10/11	172.10
1988/10/12	154.55
1988/10/13	128.20
1988/10/14	150.50
1988/10/15	196.80
1988/10/16	202.60
1988/10/17	237.60
1988/10/18	242.40
1988/10/19	211.30
1988/10/20	221.60
1988/10/21	180.20
1988/10/22	168.05
1988/10/23	142.40
1988/10/24	120.50
1988/10/25	106.60
1988/10/26	95.05
1988/10/27	84.65
1988/10/28	73.60
1988/10/29	66.80
1988/10/30	60.85
1988/10/31	57.90
1988/11/01	53.70
1988/11/02	50.90
1988/11/03	46.70
1988/11/04	44.80
1988/11/05	44.20
1988/11/06	43.60
1988/11/07	45.40
1988/11/08	40.60
1988/11/09	37.00
1988/11/10	35.20
1988/11/11	35.80
1988/11/12	39.40
1988/11/13	39.40
1988/11/14	38.20
1988/11/15	36.40
1988/11/16	36.40
1988/11/17	35.80
1988/11/18	38.80
1988/11/19	39.40
1988/11/20	41.80
1988/11/21	43.00
1988/11/22	45.40
1988/11/23	47.40
1988/11/24	46.00
1988/11/25	42.40
1988/11/26	40.00
1988/11/27	37.60
1988/11/28	36.40
1988/11/29	34.60
1988/11/30	33.50
1988/12/01	33.00
1988/12/02	31.00
1988/12/03	30.00
1988/12/04	28.50
1988/12/05	28.00
1988/12/06	26.50
1988/12/07	26.50
1988/12/08	24.00
1988/12/09	22.65
1988/12/10	20.85
1988/12/11	19.50
1988/12/12	18.15
1988/12/13	16.80
1988/12/14	15.45
1988/12/15	15.00
1988/12/16	14.01
1988/12/17	13.02
1988/12/18	12.03
1988/12/19	11.70
1988/12/20	11.70
1988/12/21	11.12
1988/12/22	10.25
1988/12/23	9.96
1988/12/24	9.67
1988/12/25	9.67
1988/12/26	9.67
1988/12/27	9.09
1988/12/28	8.80
1988/12/29	8.56
1988/12/30	8.31
1988/12/31	7.82
#===========================================
# Number of observations = 366 / 366
# Average = 80.72