1988/01/01	3.50
1988/01/02	3.30
1988/01/03	3.50
1988/01/04	3.30
1988/01/05	3.30
1988/01/06	3.20
1988/01/07	3.10
1988/01/08	3.00
1988/01/09	3.00
1988/01/10	2.92
1988/01/11	2.92
1988/01/12	2.92
1988/01/13	2.76
1988/01/14	2.68
1988/01/15	2.60
1988/01/16	2.60
1988/01/17	2.52
1988/01/18	2.52
1988/01/19	2.36
1988/01/20	2.28
1988/01/21	2.20
1988/01/22	2.06
1988/01/23	2.06
1988/01/24	2.06
1988/01/25	1.92
1988/01/26	1.92
1988/01/27	1.92
1988/01/28	1.85
1988/01/29	1.85
1988/01/30	1.85
1988/01/31	1.85
1988/02/01	1.78
1988/02/02	1.64
1988/02/03	1.85
1988/02/04	1.92
1988/02/05	1.78
1988/02/06	1.71
1988/02/07	1.64
1988/02/08	1.57
1988/02/09	1.57
1988/02/10	1.57
1988/02/11	1.57
1988/02/12	1.50
1988/02/13	1.50
1988/02/14	1.45
1988/02/15	1.71
1988/02/16	1.85
1988/02/17	1.71
1988/02/18	1.78
1988/02/19	2.20
1988/02/20	2.36
1988/02/21	2.28
1988/02/22	2.13
1988/02/23	2.06
1988/02/24	2.06
1988/02/25	1.92
1988/02/26	1.78
1988/02/27	1.64
1988/02/28	1.64
1988/02/29	1.50
1988/03/01	1.35
1988/03/02	1.25
1988/03/03	1.30
1988/03/04	1.30
1988/03/05	1.45
1988/03/06	1.50
1988/03/07	1.35
1988/03/08	1.15
1988/03/09	1.25
1988/03/10	1.35
1988/03/11	1.30
1988/03/12	1.25
1988/03/13	1.20
1988/03/14	1.15
1988/03/15	1.10
1988/03/16	1.00
1988/03/17	0.95
1988/03/18	0.90
1988/03/19	0.80
1988/03/20	0.85
1988/03/21	0.90
1988/03/22	0.85
1988/03/23	0.75
1988/03/24	0.65
1988/03/25	0.60
1988/03/26	0.55
1988/03/27	0.50
1988/03/28	0.55
1988/03/29	0.55
1988/03/30	0.50
1988/03/31	0.45
1988/04/01	0.08
1988/04/02	0.10
1988/04/03	0.18
1988/04/04	0.18
1988/04/05	0.16
1988/04/06	0.16
1988/04/07	0.14
1988/04/08	0.14
1988/04/09	0.14
1988/04/10	0.14
1988/04/11	0.18
1988/04/12	1.04
1988/04/13	1.25
1988/04/14	1.18
1988/04/15	1.04
1988/04/16	1.25
1988/04/17	0.97
1988/04/18	2.62
1988/04/19	4.90
1988/04/20	4.10
1988/04/21	4.30
1988/04/22	4.80
1988/04/23	3.73
1988/04/24	3.10
1988/04/25	2.86
1988/04/26	2.02
1988/04/27	1.81
1988/04/28	2.30
1988/04/29	3.10
1988/04/30	5.78
1988/05/01	7.70
1988/05/02	10.67
1988/05/03	11.69
1988/05/04	18.20
1988/05/05	17.20
1988/05/06	15.40
1988/05/07	13.46
1988/05/08	16.60
1988/05/09	17.40
1988/05/10	18.00
1988/05/11	12.92
1988/05/12	14.60
1988/05/13	20.20
1988/05/14	25.15
1988/05/15	30.80
1988/05/16	65.82
1988/05/17	86.44
1988/05/18	59.30
1988/05/19	36.94
1988/05/20	31.72
1988/05/21	21.40
1988/05/22	20.00
1988/05/23	15.00
1988/05/24	11.69
1988/05/25	9.94
1988/05/26	8.68
1988/05/27	7.98
1988/05/28	7.28
1988/05/29	7.14
1988/05/30	8.40
1988/05/31	9.80
1988/06/01	7.98
1988/06/02	10.08
1988/06/03	20.40
1988/06/04	27.58
1988/06/05	15.40
1988/06/06	11.52
1988/06/07	18.00
1988/06/08	25.36
1988/06/09	20.80
1988/06/10	19.40
1988/06/11	15.40
1988/06/12	24.10
1988/06/13	17.80
1988/06/14	15.60
1988/06/15	14.20
1988/06/16	12.38
1988/06/17	10.36
1988/06/18	11.18
1988/06/19	10.36
1988/06/20	9.38
1988/06/21	10.22
1988/06/22	12.03
1988/06/23	10.50
1988/06/24	8.82
1988/06/25	7.98
1988/06/26	7.98
1988/06/27	7.84
1988/06/28	7.28
1988/06/29	6.72
1988/06/30	8.96
1988/07/01	7.70
1988/07/02	7.42
1988/07/03	5.78
1988/07/04	5.39
1988/07/05	6.72
1988/07/06	7.42
1988/07/07	20.40
1988/07/08	27.58
1988/07/09	20.00
1988/07/10	13.46
1988/07/11	11.52
1988/07/12	12.38
1988/07/13	19.20
1988/07/14	32.64
1988/07/15	38.62
1988/07/16	43.45
1988/07/17	46.55
1988/07/18	101.50
1988/07/19	62.20
1988/07/20	41.50
1988/07/21	52.10
1988/07/22	66.13
1988/07/23	52.66
1988/07/24	38.14
1988/07/25	34.30
1988/07/26	32.87
1988/07/27	35.74
1988/07/28	34.54
1988/07/29	41.50
1988/07/30	33.34
1988/07/31	34.78
1988/08/01	28.73
1988/08/02	27.12
1988/08/03	32.87
1988/08/04	38.86
1988/08/05	53.79
1988/08/06	43.45
1988/08/07	35.02
1988/08/08	33.82
1988/08/09	64.00
1988/08/10	50.70
1988/08/11	60.17
1988/08/12	77.11
1988/08/13	65.20
1988/08/14	64.00
1988/08/15	48.74
1988/08/16	38.86
1988/08/17	35.50
1988/08/18	35.74
1988/08/19	33.82
1988/08/20	46.82
1988/08/21	46.55
1988/08/22	53.79
1988/08/23	57.27
1988/08/24	46.28
1988/08/25	39.58
1988/08/26	47.90
1988/08/27	49.86
1988/08/28	47.63
1988/08/29	44.20
1988/08/30	71.83
1988/08/31	101.50
1988/09/01	101.50
1988/09/02	78.78
1988/09/03	57.85
1988/09/04	50.42
1988/09/05	47.90
1988/09/06	44.70
1988/09/07	45.74
1988/09/08	53.22
1988/09/09	46.28
1988/09/10	47.09
1988/09/11	51.82
1988/09/12	46.28
1988/09/13	49.58
1988/09/14	69.90
1988/09/15	61.62
1988/09/16	46.28
1988/09/17	38.86
1988/09/18	34.06
1988/09/19	30.34
1988/09/20	38.86
1988/09/21	40.30
1988/09/22	37.42
1988/09/23	30.80
1988/09/24	27.58
1988/09/25	25.78
1988/09/26	23.26
1988/09/27	22.21
1988/09/28	28.04
1988/09/29	36.22
1988/09/30	26.43
1988/10/01	23.89
1988/10/02	21.80
1988/10/03	23.26
1988/10/04	27.12
1988/10/05	100.74
1988/10/06	114.60
1988/10/07	96.18
1988/10/08	95.08
1988/10/09	77.11
1988/10/10	115.40
1988/10/11	78.44
1988/10/12	60.17
1988/10/13	79.12
1988/10/14	122.20
1988/10/15	162.65
1988/10/16	159.11
1988/10/17	115.40
1988/10/18	98.84
1988/10/19	91.48
1988/10/20	73.48
1988/10/21	59.88
1988/10/22	50.70
1988/10/23	44.45
1988/10/24	41.50
1988/10/25	52.38
1988/10/26	66.75
1988/10/27	76.78
1988/10/28	58.14
1988/10/29	45.74
1988/10/30	38.62
1988/10/31	34.54
1988/11/01	31.72
1988/11/02	29.42
1988/11/03	27.35
1988/11/04	25.36
1988/11/05	23.68
1988/11/06	22.63
1988/11/07	20.60
1988/11/08	19.60
1988/11/09	19.40
1988/11/10	18.20
1988/11/11	17.00
1988/11/12	16.40
1988/11/13	15.20
1988/11/14	14.40
1988/11/15	14.00
1988/11/16	13.82
1988/11/17	13.46
1988/11/18	13.10
1988/11/19	12.20
1988/11/20	11.35
1988/11/21	10.84
1988/11/22	10.22
1988/11/23	10.08
1988/11/24	9.94
1988/11/25	9.66
1988/11/26	9.24
1988/11/27	8.96
1988/11/28	8.54
1988/11/29	8.26
1988/11/30	8.12
1988/12/01	7.56
1988/12/02	7.14
1988/12/03	6.86
1988/12/04	6.86
1988/12/05	6.72
1988/12/06	6.44
1988/12/07	6.17
1988/12/08	6.17
1988/12/09	6.04
1988/12/10	5.91
1988/12/11	5.39
1988/12/12	5.13
1988/12/13	4.90
1988/12/14	4.80
1988/12/15	4.70
1988/12/16	4.60
1988/12/17	4.40
1988/12/18	4.30
1988/12/19	4.20
1988/12/20	4.20
1988/12/21	4.10
1988/12/22	4.00
1988/12/23	4.00
1988/12/24	3.91
1988/12/25	3.82
1988/12/26	3.64
1988/12/27	3.55
1988/12/28	3.55
1988/12/29	3.46
1988/12/30	3.28
1988/12/31	3.28
#===========================================
# Number of observations = 366 / 366
# Average = 22.02