1988/01/01	7.60
1988/01/02	7.30
1988/01/03	7.30
1988/01/04	7.00
1988/01/05	7.00
1988/01/06	6.80
1988/01/07	6.80
1988/01/08	6.50
1988/01/09	6.50
1988/01/10	6.50
1988/01/11	6.30
1988/01/12	6.30
1988/01/13	6.30
1988/01/14	6.10
1988/01/15	5.90
1988/01/16	5.90
1988/01/17	5.90
1988/01/18	5.70
1988/01/19	5.70
1988/01/20	5.70
1988/01/21	5.50
1988/01/22	5.50
1988/01/23	5.50
1988/01/24	5.50
1988/01/25	5.30
1988/01/26	5.30
1988/01/27	5.20
1988/01/28	5.10
1988/01/29	5.10
1988/01/30	4.90
1988/01/31	4.90
1988/02/01	4.90
1988/02/02	4.90
1988/02/03	4.90
1988/02/04	4.70
1988/02/05	4.50
1988/02/06	4.50
1988/02/07	4.30
1988/02/08	4.30
1988/02/09	4.10
1988/02/10	4.10
1988/02/11	4.10
1988/02/12	3.90
1988/02/13	3.90
1988/02/14	3.90
1988/02/15	3.90
1988/02/16	3.70
1988/02/17	3.70
1988/02/18	3.70
1988/02/19	4.30
1988/02/20	5.50
1988/02/21	5.10
1988/02/22	4.90
1988/02/23	4.50
1988/02/24	4.10
1988/02/25	3.90
1988/02/26	3.70
1988/02/27	3.50
1988/02/28	3.50
1988/02/29	3.30
1988/03/01	3.30
1988/03/02	3.10
1988/03/03	3.10
1988/03/04	2.90
1988/03/05	2.90
1988/03/06	2.70
1988/03/07	2.70
1988/03/08	2.50
1988/03/09	2.50
1988/03/10	2.50
1988/03/11	2.40
1988/03/12	2.50
1988/03/13	2.50
1988/03/14	2.50
1988/03/15	2.50
1988/03/16	2.40
1988/03/17	2.40
1988/03/18	2.40
1988/03/19	2.40
1988/03/20	2.20
1988/03/21	2.20
1988/03/22	2.00
1988/03/23	2.00
1988/03/24	1.90
1988/03/25	1.90
1988/03/26	1.70
1988/03/27	1.70
1988/03/28	1.70
1988/03/29	1.60
1988/03/30	1.60
1988/03/31	1.50
1988/04/01	1.59
1988/04/02	1.46
1988/04/03	1.46
1988/04/04	1.33
1988/04/05	1.33
1988/04/06	1.33
1988/04/07	1.33
1988/04/08	1.33
1988/04/09	1.20
1988/04/10	1.20
1988/04/11	1.20
1988/04/12	1.20
1988/04/13	1.33
1988/04/14	1.72
1988/04/15	14.20
1988/04/16	8.83
1988/04/17	6.67
1988/04/18	5.02
1988/04/19	3.94
1988/04/20	3.94
1988/04/21	6.40
1988/04/22	6.17
1988/04/23	5.02
1988/04/24	4.79
1988/04/25	4.79
1988/04/26	8.56
1988/04/27	5.94
1988/04/28	4.79
1988/04/29	37.00
1988/04/30	53.70
1988/05/01	37.00
1988/05/02	53.15
1988/05/03	27.00
1988/05/04	32.85
1988/05/05	17.50
1988/05/06	25.67
1988/05/07	28.35
1988/05/08	17.50
1988/05/09	15.10
1988/05/10	14.20
1988/05/11	17.20
1988/05/12	14.20
1988/05/13	20.33
1988/05/14	60.60
1988/05/15	46.00
1988/05/16	53.15
1988/05/17	281.15
1988/05/18	243.00
1988/05/19	119.40
1988/05/20	73.80
1988/05/21	46.00
1988/05/22	31.05
1988/05/23	27.00
1988/05/24	18.10
1988/05/25	15.10
1988/05/26	12.70
1988/05/27	11.80
1988/05/28	10.60
1988/05/29	24.33
1988/05/30	17.20
1988/05/31	15.70
1988/06/01	15.10
1988/06/02	61.80
1988/06/03	63.00
1988/06/04	111.40
1988/06/05	234.20
1988/06/06	285.20
1988/06/07	168.00
1988/06/08	128.20
1988/06/09	70.80
1988/06/10	48.75
1988/06/11	38.00
1988/06/12	30.15
1988/06/13	27.90
1988/06/14	21.66
1988/06/15	24.33
1988/06/16	17.50
1988/06/17	14.50
1988/06/18	12.10
1988/06/19	12.70
1988/06/20	37.50
1988/06/21	47.65
1988/06/22	31.50
1988/06/23	19.43
1988/06/24	14.50
1988/06/25	12.70
1988/06/26	11.80
1988/06/27	10.90
1988/06/28	10.00
1988/06/29	10.00
1988/06/30	12.70
1988/07/01	15.40
1988/07/02	14.80
1988/07/03	15.10
1988/07/04	13.00
1988/07/05	12.40
1988/07/06	10.90
1988/07/07	14.80
1988/07/08	22.55
1988/07/09	27.00
1988/07/10	31.05
1988/07/11	34.65
1988/07/12	98.50
1988/07/13	170.00
1988/07/14	298.80
1988/07/15	236.40
1988/07/16	139.40
1988/07/17	102.00
1988/07/18	212.20
1988/07/19	258.60
1988/07/20	158.10
1988/07/21	89.40
1988/07/22	73.20
1988/07/23	73.80
1988/07/24	64.20
1988/07/25	58.20
1988/07/26	43.00
1988/07/27	36.00
1988/07/28	30.15
1988/07/29	27.45
1988/07/30	24.77
1988/07/31	20.77
1988/08/01	19.43
1988/08/02	26.56
1988/08/03	29.25
1988/08/04	96.40
1988/08/05	427.00
1988/08/06	217.70
1988/08/07	113.00
1988/08/08	83.80
1988/08/09	70.20
1988/08/10	113.00
1988/08/11	277.10
1988/08/12	312.80
1988/08/13	303.00
1988/08/14	342.60
1988/08/15	321.20
1988/08/16	334.85
1988/08/17	219.90
1988/08/18	145.50
1988/08/19	114.60
1988/08/20	99.90
1988/08/21	158.10
1988/08/22	116.20
1988/08/23	104.80
1988/08/24	83.80
1988/08/25	68.40
1988/08/26	60.60
1988/08/27	98.50
1988/08/28	76.20
1988/08/29	73.20
1988/08/30	69.00
1988/08/31	54.25
1988/09/01	50.95
1988/09/02	48.20
1988/09/03	48.75
1988/09/04	41.00
1988/09/05	38.00
1988/09/06	57.60
1988/09/07	126.60
1988/09/08	106.90
1988/09/09	67.20
1988/09/10	52.05
1988/09/11	58.20
1988/09/12	67.80
1988/09/13	57.60
1988/09/14	52.60
1988/09/15	73.80
1988/09/16	113.00
1988/09/17	126.60
1988/09/18	109.80
1988/09/19	95.70
1988/09/20	69.60
1988/09/21	56.45
1988/09/22	49.30
1988/09/23	45.50
1988/09/24	40.50
1988/09/25	37.00
1988/09/26	37.50
1988/09/27	33.30
1988/09/28	31.50
1988/09/29	30.60
1988/09/30	31.05
1988/10/01	25.67
1988/10/02	24.77
1988/10/03	23.00
1988/10/04	24.33
1988/10/05	25.67
1988/10/06	23.44
1988/10/07	27.45
1988/10/08	32.85
1988/10/09	67.80
1988/10/10	46.00
1988/10/11	37.50
1988/10/12	32.40
1988/10/13	31.50
1988/10/14	67.20
1988/10/15	79.80
1988/10/16	83.80
1988/10/17	59.40
1988/10/18	53.15
1988/10/19	83.80
1988/10/20	70.20
1988/10/21	49.30
1988/10/22	40.00
1988/10/23	34.65
1988/10/24	31.05
1988/10/25	28.80
1988/10/26	26.11
1988/10/27	23.88
1988/10/28	18.99
1988/10/29	17.80
1988/10/30	17.20
1988/10/31	16.30
1988/11/01	15.70
1988/11/02	15.70
1988/11/03	15.40
1988/11/04	15.10
1988/11/05	16.60
1988/11/06	16.90
1988/11/07	18.54
1988/11/08	17.50
1988/11/09	17.50
1988/11/10	17.20
1988/11/11	17.50
1988/11/12	17.50
1988/11/13	16.90
1988/11/14	15.40
1988/11/15	16.00
1988/11/16	16.90
1988/11/17	19.43
1988/11/18	23.88
1988/11/19	28.35
1988/11/20	27.90
1988/11/21	24.33
1988/11/22	22.10
1988/11/23	20.33
1988/11/24	19.43
1988/11/25	18.10
1988/11/26	17.80
1988/11/27	17.50
1988/11/28	16.90
1988/11/29	16.30
1988/11/30	16.00
1988/12/01	16.00
1988/12/02	15.70
1988/12/03	15.40
1988/12/04	15.10
1988/12/05	14.80
1988/12/06	14.80
1988/12/07	14.50
1988/12/08	13.90
1988/12/09	13.90
1988/12/10	13.60
1988/12/11	13.60
1988/12/12	13.00
1988/12/13	11.50
1988/12/14	9.70
1988/12/15	8.56
1988/12/16	8.29
1988/12/17	8.02
1988/12/18	7.75
1988/12/19	6.67
1988/12/20	6.40
1988/12/21	6.94
1988/12/22	6.67
1988/12/23	6.17
1988/12/24	6.17
1988/12/25	5.94
1988/12/26	5.71
1988/12/27	5.71
1988/12/28	5.48
1988/12/29	5.48
1988/12/30	5.02
1988/12/31	5.02
#===========================================
# Number of observations = 366 / 366
# Average = 39.91