1988/01/01	9.20
1988/01/02	9.20
1988/01/03	8.70
1988/01/04	8.30
1988/01/05	8.00
1988/01/06	8.00
1988/01/07	8.00
1988/01/08	8.00
1988/01/09	8.00
1988/01/10	8.00
1988/01/11	7.80
1988/01/12	7.50
1988/01/13	7.30
1988/01/14	7.30
1988/01/15	7.30
1988/01/16	7.30
1988/01/17	7.00
1988/01/18	6.70
1988/01/19	6.20
1988/01/20	6.20
1988/01/21	6.20
1988/01/22	6.00
1988/01/23	5.80
1988/01/24	5.80
1988/01/25	5.60
1988/01/26	5.40
1988/01/27	5.20
1988/01/28	5.00
1988/01/29	5.00
1988/01/30	4.80
1988/01/31	4.80
1988/02/01	5.00
1988/02/02	5.00
1988/02/03	5.00
1988/02/04	5.00
1988/02/05	5.00
1988/02/06	5.00
1988/02/07	5.00
1988/02/08	5.00
1988/02/09	5.00
1988/02/10	5.00
1988/02/11	5.00
1988/02/12	5.00
1988/02/13	5.00
1988/02/14	5.00
1988/02/15	5.00
1988/02/16	5.00
1988/02/17	5.00
1988/02/18	4.60
1988/02/19	4.60
1988/02/20	4.60
1988/02/21	4.60
1988/02/22	4.60
1988/02/23	4.60
1988/02/24	4.60
1988/02/25	4.60
1988/02/26	4.60
1988/02/27	4.60
1988/02/28	4.40
1988/02/29	4.40
1988/03/01	4.40
1988/03/02	4.40
1988/03/03	4.20
1988/03/04	4.20
1988/03/05	4.00
1988/03/06	3.80
1988/03/07	3.60
1988/03/08	3.40
1988/03/09	3.40
1988/03/10	3.40
1988/03/11	3.40
1988/03/12	3.40
1988/03/13	3.40
1988/03/14	3.00
1988/03/15	3.00
1988/03/16	3.00
1988/03/17	3.00
1988/03/18	3.00
1988/03/19	3.00
1988/03/20	2.80
1988/03/21	2.60
1988/03/22	2.40
1988/03/23	2.20
1988/03/24	2.20
1988/03/25	2.20
1988/03/26	2.20
1988/03/27	2.20
1988/03/28	2.20
1988/03/29	2.20
1988/03/30	2.20
1988/03/31	2.00
1988/04/01	1.80
1988/04/02	1.80
1988/04/03	1.80
1988/04/04	1.80
1988/04/05	1.80
1988/04/06	1.80
1988/04/07	1.80
1988/04/08	1.70
1988/04/09	1.40
1988/04/10	1.40
1988/04/11	1.30
1988/04/12	1.30
1988/04/13	1.30
1988/04/14	1.30
1988/04/15	1.80
1988/04/16	3.20
1988/04/17	3.40
1988/04/18	3.80
1988/04/19	3.60
1988/04/20	3.80
1988/04/21	4.00
1988/04/22	4.20
1988/04/23	4.20
1988/04/24	4.20
1988/04/25	4.20
1988/04/26	3.80
1988/04/27	3.20
1988/04/28	3.00
1988/04/29	3.00
1988/04/30	3.00
1988/05/01	9.20
1988/05/02	10.30
1988/05/03	10.80
1988/05/04	16.40
1988/05/05	39.00
1988/05/06	50.40
1988/05/07	43.50
1988/05/08	37.50
1988/05/09	41.00
1988/05/10	35.50
1988/05/11	32.00
1988/05/12	25.60
1988/05/13	20.40
1988/05/14	20.00
1988/05/15	18.40
1988/05/16	27.20
1988/05/17	50.40
1988/05/18	124.80
1988/05/19	126.40
1988/05/20	288.30
1988/05/21	260.80
1988/05/22	180.40
1988/05/23	130.40
1988/05/24	91.30
1988/05/25	73.80
1988/05/26	49.80
1988/05/27	50.40
1988/05/28	55.80
1988/05/29	39.00
1988/05/30	26.00
1988/05/31	21.60
1988/06/01	18.80
1988/06/02	15.20
1988/06/03	14.00
1988/06/04	20.00
1988/06/05	104.00
1988/06/06	188.00
1988/06/07	513.80
1988/06/08	672.00
1988/06/09	512.40
1988/06/10	352.60
1988/06/11	240.60
1988/06/12	157.90
1988/06/13	119.20
1988/06/14	92.80
1988/06/15	74.50
1988/06/16	73.10
1988/06/17	63.30
1988/06/18	61.90
1988/06/19	52.20
1988/06/20	52.80
1988/06/21	68.90
1988/06/22	55.20
1988/06/23	54.60
1988/06/24	45.60
1988/06/25	46.80
1988/06/26	40.00
1988/06/27	35.00
1988/06/28	34.00
1988/06/29	35.00
1988/06/30	34.00
1988/07/01	33.50
1988/07/02	34.00
1988/07/03	45.60
1988/07/04	59.10
1988/07/05	69.60
1988/07/06	70.30
1988/07/07	54.60
1988/07/08	43.50
1988/07/09	43.00
1988/07/10	45.00
1988/07/11	41.50
1988/07/12	40.50
1988/07/13	57.00
1988/07/14	73.10
1988/07/15	228.40
1988/07/16	569.80
1988/07/17	825.60
1988/07/18	718.40
1988/07/19	596.50
1988/07/20	567.00
1988/07/21	620.50
1988/07/22	416.70
1988/07/23	292.70
1988/07/24	216.30
1988/07/25	181.30
1988/07/26	200.20
1988/07/27	161.50
1988/07/28	131.20
1988/07/29	104.80
1988/07/30	88.50
1988/07/31	80.80
1988/08/01	73.80
1988/08/02	70.30
1988/08/03	69.60
1988/08/04	79.40
1988/08/05	100.00
1988/08/06	117.60
1988/08/07	181.30
1988/08/08	397.20
1988/08/09	258.70
1988/08/10	175.00
1988/08/11	140.00
1988/08/12	161.50
1988/08/13	239.50
1988/08/14	406.30
1988/08/15	513.80
1988/08/16	562.80
1988/08/17	623.50
1988/08/18	662.40
1988/08/19	523.60
1988/08/20	351.40
1988/08/21	292.70
1988/08/22	252.70
1988/08/23	262.80
1988/08/24	254.70
1988/08/25	201.20
1988/08/26	166.90
1988/08/27	146.40
1988/08/28	134.40
1988/08/29	131.20
1988/08/30	157.90
1988/08/31	197.10
1988/09/01	286.10
1988/09/02	242.60
1988/09/03	190.10
1988/09/04	149.80
1988/09/05	124.80
1988/09/06	115.20
1988/09/07	116.00
1988/09/08	108.00
1988/09/09	109.60
1988/09/10	146.40
1988/09/11	146.40
1988/09/12	116.00
1988/09/13	108.80
1988/09/14	118.40
1988/09/15	112.80
1988/09/16	118.40
1988/09/17	160.60
1988/09/18	182.20
1988/09/19	175.90
1988/09/20	160.60
1988/09/21	142.40
1988/09/22	130.40
1988/09/23	109.60
1988/09/24	94.40
1988/09/25	84.30
1988/09/26	77.30
1988/09/27	73.10
1988/09/28	70.30
1988/09/29	65.40
1988/09/30	62.60
1988/10/01	65.40
1988/10/02	66.80
1988/10/03	66.10
1988/10/04	86.40
1988/10/05	86.40
1988/10/06	80.80
1988/10/07	91.30
1988/10/08	136.80
1988/10/09	106.40
1988/10/10	155.20
1988/10/11	174.10
1988/10/12	155.20
1988/10/13	134.40
1988/10/14	132.80
1988/10/15	192.10
1988/10/16	201.20
1988/10/17	229.50
1988/10/18	253.70
1988/10/19	217.30
1988/10/20	229.50
1988/10/21	187.00
1988/10/22	170.50
1988/10/23	152.50
1988/10/24	123.20
1988/10/25	111.20
1988/10/26	98.40
1988/10/27	87.10
1988/10/28	75.90
1988/10/29	68.20
1988/10/30	62.60
1988/10/31	59.10
1988/11/01	55.80
1988/11/02	52.80
1988/11/03	49.20
1988/11/04	46.20
1988/11/05	45.00
1988/11/06	40.00
1988/11/07	46.20
1988/11/08	43.50
1988/11/09	39.50
1988/11/10	37.50
1988/11/11	36.00
1988/11/12	39.50
1988/11/13	41.00
1988/11/14	39.00
1988/11/15	37.00
1988/11/16	37.00
1988/11/17	36.00
1988/11/18	39.00
1988/11/19	37.50
1988/11/20	41.00
1988/11/21	43.00
1988/11/22	44.50
1988/11/23	45.60
1988/11/24	45.00
1988/11/25	43.00
1988/11/26	41.00
1988/11/27	40.00
1988/11/28	37.50
1988/11/29	36.50
1988/11/30	36.50
1988/12/01	34.50
1988/12/02	32.50
1988/12/03	31.00
1988/12/04	30.00
1988/12/05	28.80
1988/12/06	28.00
1988/12/07	26.80
1988/12/08	25.60
1988/12/09	23.20
1988/12/10	22.40
1988/12/11	21.20
1988/12/12	20.00
1988/12/13	19.20
1988/12/14	18.40
1988/12/15	17.20
1988/12/16	16.00
1988/12/17	15.20
1988/12/18	14.80
1988/12/19	13.10
1988/12/20	13.10
1988/12/21	12.80
1988/12/22	11.90
1988/12/23	11.60
1988/12/24	11.60
1988/12/25	11.60
1988/12/26	11.60
1988/12/27	11.60
1988/12/28	11.00
1988/12/29	10.00
1988/12/30	10.00
1988/12/31	9.50
#===========================================
# Number of observations = 366 / 366
# Average = 84.09