1988/01/01	17.95
1988/01/02	17.10
1988/01/03	17.10
1988/01/04	16.70
1988/01/05	16.70
1988/01/06	16.70
1988/01/07	16.70
1988/01/08	16.30
1988/01/09	16.30
1988/01/10	16.30
1988/01/11	15.90
1988/01/12	15.50
1988/01/13	15.50
1988/01/14	15.50
1988/01/15	15.10
1988/01/16	14.70
1988/01/17	14.70
1988/01/18	14.70
1988/01/19	13.90
1988/01/20	13.90
1988/01/21	13.90
1988/01/22	13.90
1988/01/23	13.90
1988/01/24	13.50
1988/01/25	13.10
1988/01/26	13.10
1988/01/27	12.70
1988/01/28	12.30
1988/01/29	12.30
1988/01/30	11.90
1988/01/31	12.30
1988/02/01	11.90
1988/02/02	11.90
1988/02/03	11.50
1988/02/04	11.50
1988/02/05	11.10
1988/02/06	11.10
1988/02/07	10.70
1988/02/08	10.70
1988/02/09	10.30
1988/02/10	9.90
1988/02/11	9.90
1988/02/12	10.30
1988/02/13	10.30
1988/02/14	10.30
1988/02/15	9.90
1988/02/16	9.50
1988/02/17	9.90
1988/02/18	9.19
1988/02/19	9.90
1988/02/20	11.50
1988/02/21	11.50
1988/02/22	12.70
1988/02/23	11.50
1988/02/24	11.10
1988/02/25	10.70
1988/02/26	10.30
1988/02/27	10.30
1988/02/28	10.30
1988/02/29	10.30
1988/03/01	9.90
1988/03/02	9.50
1988/03/03	9.19
1988/03/04	9.19
1988/03/05	8.88
1988/03/06	8.57
1988/03/07	9.90
1988/03/08	9.50
1988/03/09	9.90
1988/03/10	10.70
1988/03/11	10.30
1988/03/12	9.50
1988/03/13	9.19
1988/03/14	8.88
1988/03/15	8.88
1988/03/16	8.57
1988/03/17	8.57
1988/03/18	8.26
1988/03/19	7.95
1988/03/20	7.95
1988/03/21	8.57
1988/03/22	8.26
1988/03/23	7.95
1988/03/24	7.64
1988/03/25	7.64
1988/03/26	7.64
1988/03/27	7.64
1988/03/28	7.33
1988/03/29	7.33
1988/03/30	7.33
1988/03/31	7.33
1988/04/01	3.80
1988/04/02	3.80
1988/04/03	3.80
1988/04/04	3.80
1988/04/05	3.80
1988/04/06	3.80
1988/04/07	3.80
1988/04/08	3.80
1988/04/09	3.65
1988/04/10	3.65
1988/04/11	3.65
1988/04/12	3.65
1988/04/13	3.65
1988/04/14	4.85
1988/04/15	15.00
1988/04/16	8.40
1988/04/17	7.20
1988/04/18	6.00
1988/04/19	6.20
1988/04/20	7.00
1988/04/21	8.60
1988/04/22	7.60
1988/04/23	6.60
1988/04/24	6.40
1988/04/25	7.40
1988/04/26	8.40
1988/04/27	7.80
1988/04/28	7.20
1988/04/29	14.50
1988/04/30	66.60
1988/05/01	19.90
1988/05/02	16.30
1988/05/03	14.50
1988/05/04	12.50
1988/05/05	12.00
1988/05/06	13.00
1988/05/07	16.60
1988/05/08	17.80
1988/05/09	15.50
1988/05/10	14.25
1988/05/11	13.00
1988/05/12	11.00
1988/05/13	10.40
1988/05/14	10.00
1988/05/15	10.00
1988/05/16	11.00
1988/05/17	203.00
1988/05/18	133.35
1988/05/19	93.00
1988/05/20	83.20
1988/05/21	49.05
1988/05/22	25.90
1988/05/23	18.70
1988/05/24	16.30
1988/05/25	14.75
1988/05/26	13.75
1988/05/27	13.50
1988/05/28	14.75
1988/05/29	25.90
1988/05/30	34.20
1988/05/31	18.10
1988/06/01	15.75
1988/06/02	19.00
1988/06/03	23.05
1988/06/04	25.90
1988/06/05	47.70
1988/06/06	179.00
1988/06/07	158.00
1988/06/08	83.20
1988/06/09	50.40
1988/06/10	40.95
1988/06/11	39.60
1988/06/12	29.90
1988/06/13	26.70
1988/06/14	23.50
1988/06/15	24.30
1988/06/16	30.70
1988/06/17	40.95
1988/06/18	36.90
1988/06/19	39.60
1988/06/20	59.85
1988/06/21	110.15
1988/06/22	81.80
1988/06/23	61.20
1988/06/24	45.00
1988/06/25	34.20
1988/06/26	28.30
1988/06/27	25.90
1988/06/28	24.30
1988/06/29	35.55
1988/06/30	73.40
1988/07/01	72.00
1988/07/02	63.90
1988/07/03	50.40
1988/07/04	55.80
1988/07/05	120.30
1988/07/06	370.10
1988/07/07	426.80
1988/07/08	355.92
1988/07/09	238.07
1988/07/10	197.00
1988/07/11	165.50
1988/07/12	159.50
1988/07/13	228.93
1988/07/14	164.00
1988/07/15	129.00
1988/07/16	105.80
1988/07/17	108.70
1988/07/18	120.30
1988/07/19	144.95
1988/07/20	108.70
1988/07/21	107.25
1988/07/22	158.00
1988/07/23	201.50
1988/07/24	147.85
1988/07/25	110.15
1988/07/26	87.40
1988/07/27	81.80
1988/07/28	74.80
1988/07/29	67.95
1988/07/30	81.80
1988/07/31	65.25
1988/08/01	150.20
1988/08/02	166.20
1988/08/03	219.00
1988/08/04	311.20
1988/08/05	520.00
1988/08/06	321.40
1988/08/07	357.10
1988/08/08	546.25
1988/08/09	514.75
1988/08/10	481.50
1988/08/11	581.90
1988/08/12	523.50
1988/08/13	411.50
1988/08/14	380.90
1988/08/15	481.50
1988/08/16	499.00
1988/08/17	399.60
1988/08/18	365.60
1988/08/19	302.70
1988/08/20	271.30
1988/08/21	253.15
1988/08/22	233.40
1988/08/23	214.20
1988/08/24	191.80
1988/08/25	171.00
1988/08/26	164.60
1988/08/27	159.80
1988/08/28	150.20
1988/08/29	174.20
1988/08/30	156.60
1988/08/31	155.00
1988/09/01	169.40
1988/09/02	150.20
1988/09/03	134.50
1988/09/04	140.60
1988/09/05	174.20
1988/09/06	214.20
1988/09/07	235.00
1988/09/08	180.60
1988/09/09	139.00
1988/09/10	130.00
1988/09/11	155.00
1988/09/12	130.00
1988/09/13	116.50
1988/09/14	109.00
1988/09/15	101.50
1988/09/16	104.50
1988/09/17	103.00
1988/09/18	106.00
1988/09/19	89.65
1988/09/20	82.40
1988/09/21	94.00
1988/09/22	88.20
1988/09/23	76.60
1988/09/24	70.80
1988/09/25	65.00
1988/09/26	60.65
1988/09/27	57.75
1988/09/28	57.75
1988/09/29	57.75
1988/09/30	57.75
1988/10/01	51.95
1988/10/02	51.95
1988/10/03	56.30
1988/10/04	51.95
1988/10/05	57.75
1988/10/06	69.35
1988/10/07	100.00
1988/10/08	100.00
1988/10/09	100.00
1988/10/10	83.85
1988/10/11	73.70
1988/10/12	65.00
1988/10/13	56.30
1988/10/14	57.75
1988/10/15	62.10
1988/10/16	79.50
1988/10/17	72.25
1988/10/18	62.10
1988/10/19	62.10
1988/10/20	60.65
1988/10/21	59.20
1988/10/22	51.95
1988/10/23	49.10
1988/10/24	46.30
1988/10/25	42.10
1988/10/26	40.70
1988/10/27	37.90
1988/10/28	35.30
1988/10/29	34.10
1988/10/30	34.10
1988/10/31	32.90
1988/11/01	32.90
1988/11/02	32.90
1988/11/03	31.70
1988/11/04	30.50
1988/11/05	30.50
1988/11/06	30.50
1988/11/07	29.30
1988/11/08	26.90
1988/11/09	26.90
1988/11/10	26.90
1988/11/11	26.90
1988/11/12	25.70
1988/11/13	25.70
1988/11/14	25.70
1988/11/15	25.70
1988/11/16	25.70
1988/11/17	32.90
1988/11/18	39.30
1988/11/19	37.90
1988/11/20	35.30
1988/11/21	29.30
1988/11/22	25.70
1988/11/23	25.70
1988/11/24	25.70
1988/11/25	24.50
1988/11/26	23.75
1988/11/27	23.00
1988/11/28	22.25
1988/11/29	22.25
1988/11/30	21.50
1988/12/01	21.50
1988/12/02	20.75
1988/12/03	20.75
1988/12/04	20.00
1988/12/05	18.50
1988/12/06	18.50
1988/12/07	18.50
1988/12/08	17.75
1988/12/09	17.00
1988/12/10	17.00
1988/12/11	17.00
1988/12/12	17.00
1988/12/13	15.00
1988/12/14	15.00
1988/12/15	15.00
1988/12/16	14.50
1988/12/17	14.50
1988/12/18	14.00
1988/12/19	13.50
1988/12/20	13.50
1988/12/21	13.00
1988/12/22	13.00
1988/12/23	13.00
1988/12/24	12.50
1988/12/25	12.50
1988/12/26	12.00
1988/12/27	12.00
1988/12/28	11.65
1988/12/29	11.65
1988/12/30	11.30
1988/12/31	11.30
#===========================================
# Number of observations = 366 / 366
# Average = 67.70