1988/01/01	4.70
1988/01/02	4.70
1988/01/03	4.70
1988/01/04	4.70
1988/01/05	4.60
1988/01/06	4.70
1988/01/07	4.60
1988/01/08	4.60
1988/01/09	4.70
1988/01/10	4.70
1988/01/11	4.60
1988/01/12	4.60
1988/01/13	4.10
1988/01/14	3.90
1988/01/15	3.90
1988/01/16	3.90
1988/01/17	3.90
1988/01/18	3.90
1988/01/19	3.80
1988/01/20	3.80
1988/01/21	3.10
1988/01/22	3.10
1988/01/23	2.90
1988/01/24	2.70
1988/01/25	2.70
1988/01/26	2.70
1988/01/27	2.70
1988/01/28	2.70
1988/01/29	2.90
1988/01/30	3.10
1988/01/31	3.20
1988/02/01	3.10
1988/02/02	2.90
1988/02/03	2.90
1988/02/04	2.90
1988/02/05	3.10
1988/02/06	3.10
1988/02/07	2.90
1988/02/08	2.90
1988/02/09	2.70
1988/02/10	2.90
1988/02/11	2.90
1988/02/12	2.90
1988/02/13	2.70
1988/02/14	2.70
1988/02/15	2.70
1988/02/16	2.70
1988/02/17	2.90
1988/02/18	2.90
1988/02/19	3.50
1988/02/20	3.50
1988/02/21	3.40
1988/02/22	3.40
1988/02/23	3.50
1988/02/24	3.40
1988/02/25	3.60
1988/02/26	3.60
1988/02/27	3.60
1988/02/28	3.60
1988/02/29	3.80
1988/03/01	3.90
1988/03/02	3.90
1988/03/03	3.90
1988/03/04	3.90
1988/03/05	4.10
1988/03/06	4.10
1988/03/07	4.10
1988/03/08	4.30
1988/03/09	4.40
1988/03/10	4.30
1988/03/11	4.10
1988/03/12	4.10
1988/03/13	3.90
1988/03/14	3.90
1988/03/15	3.90
1988/03/16	3.90
1988/03/17	3.90
1988/03/18	3.80
1988/03/19	3.80
1988/03/20	3.60
1988/03/21	3.50
1988/03/22	3.60
1988/03/23	3.50
1988/03/24	3.50
1988/03/25	3.20
1988/03/26	3.10
1988/03/27	2.90
1988/03/28	3.10
1988/03/29	3.20
1988/03/30	2.70
1988/03/31	2.60
1988/04/01	4.00
1988/04/02	4.00
1988/04/03	3.80
1988/04/04	3.30
1988/04/05	3.10
1988/04/06	7.80
1988/04/07	6.20
1988/04/08	5.50
1988/04/09	5.00
1988/04/10	4.50
1988/04/11	4.00
1988/04/12	3.50
1988/04/13	3.30
1988/04/14	3.10
1988/04/15	4.00
1988/04/16	7.00
1988/04/17	4.70
1988/04/18	4.70
1988/04/19	4.50
1988/04/20	4.00
1988/04/21	3.50
1988/04/22	4.00
1988/04/23	3.50
1988/04/24	4.30
1988/04/25	18.30
1988/04/26	15.20
1988/04/27	13.40
1988/04/28	12.30
1988/04/29	12.70
1988/04/30	12.70
1988/05/01	68.40
1988/05/02	56.90
1988/05/03	73.20
1988/05/04	54.30
1988/05/05	39.40
1988/05/06	40.00
1988/05/07	28.50
1988/05/08	32.30
1988/05/09	21.80
1988/05/10	17.10
1988/05/11	17.50
1988/05/12	18.70
1988/05/13	15.20
1988/05/14	18.70
1988/05/15	66.80
1988/05/16	76.40
1988/05/17	82.00
1988/05/18	347.50
1988/05/19	268.80
1988/05/20	157.70
1988/05/21	91.60
1988/05/22	71.60
1988/05/23	38.90
1988/05/24	30.60
1988/05/25	59.50
1988/05/26	19.20
1988/05/27	12.00
1988/05/28	10.10
1988/05/29	8.90
1988/05/30	8.00
1988/05/31	7.80
1988/06/01	8.30
1988/06/02	27.50
1988/06/03	145.60
1988/06/04	128.50
1988/06/05	184.00
1988/06/06	352.90
1988/06/07	351.50
1988/06/08	227.10
1988/06/09	164.30
1988/06/10	82.80
1988/06/11	54.90
1988/06/12	41.30
1988/06/13	32.30
1988/06/14	23.80
1988/06/15	25.40
1988/06/16	28.00
1988/06/17	19.20
1988/06/18	16.00
1988/06/19	14.10
1988/06/20	13.80
1988/06/21	14.80
1988/06/22	28.00
1988/06/23	20.80
1988/06/24	16.00
1988/06/25	15.20
1988/06/26	13.80
1988/06/27	14.40
1988/06/28	13.80
1988/06/29	13.10
1988/06/30	11.00
1988/07/01	9.20
1988/07/02	8.60
1988/07/03	9.20
1988/07/04	9.50
1988/07/05	11.00
1988/07/06	12.30
1988/07/07	13.10
1988/07/08	12.00
1988/07/09	10.70
1988/07/10	10.40
1988/07/11	11.00
1988/07/12	16.00
1988/07/13	90.80
1988/07/14	205.70
1988/07/15	390.00
1988/07/16	357.00
1988/07/17	232.90
1988/07/18	222.50
1988/07/19	401.60
1988/07/20	342.10
1988/07/21	201.60
1988/07/22	123.10
1988/07/23	103.10
1988/07/24	99.70
1988/07/25	85.20
1988/07/26	70.00
1988/07/27	51.10
1988/07/28	37.80
1988/07/29	33.40
1988/07/30	33.40
1988/07/31	31.20
1988/08/01	29.00
1988/08/02	34.50
1988/08/03	39.40
1988/08/04	48.40
1988/08/05	122.20
1988/08/06	436.00
1988/08/07	252.00
1988/08/08	142.00
1988/08/09	103.90
1988/08/10	120.40
1988/08/11	191.00
1988/08/12	358.30
1988/08/13	442.20
1988/08/14	445.40
1988/08/15	459.60
1988/08/16	433.00
1988/08/17	391.50
1988/08/18	248.40
1988/08/19	181.00
1988/08/20	148.30
1988/08/21	171.00
1988/08/22	186.00
1988/08/23	141.10
1988/08/24	112.50
1988/08/25	94.80
1988/08/26	79.60
1988/08/27	68.40
1988/08/28	109.00
1988/08/29	75.60
1988/08/30	77.20
1988/08/31	85.20
1988/09/01	77.20
1988/09/02	64.10
1988/09/03	54.30
1988/09/04	53.00
1988/09/05	45.80
1988/09/06	44.50
1988/09/07	60.20
1988/09/08	133.00
1988/09/09	103.90
1988/09/10	70.00
1988/09/11	78.00
1988/09/12	81.20
1988/09/13	72.40
1988/09/14	69.20
1988/09/15	133.90
1988/09/16	150.10
1988/09/17	153.90
1988/09/18	134.80
1988/09/19	121.30
1988/09/20	99.70
1988/09/21	75.60
1988/09/22	58.80
1988/09/23	48.40
1988/09/24	43.90
1988/09/25	45.20
1988/09/26	41.30
1988/09/27	35.60
1988/09/28	32.30
1988/09/29	33.90
1988/09/30	33.90
1988/10/01	30.10
1988/10/02	27.50
1988/10/03	31.20
1988/10/04	31.70
1988/10/05	62.70
1988/10/06	93.20
1988/10/07	51.10
1988/10/08	65.40
1988/10/09	74.00
1988/10/10	67.60
1988/10/11	58.20
1988/10/12	45.20
1988/10/13	40.60
1988/10/14	41.30
1988/10/15	94.80
1988/10/16	160.50
1988/10/17	123.10
1988/10/18	82.00
1988/10/19	70.00
1988/10/20	96.40
1988/10/21	80.40
1988/10/22	62.10
1988/10/23	49.70
1988/10/24	40.60
1988/10/25	35.60
1988/10/26	29.50
1988/10/27	26.90
1988/10/28	26.90
1988/10/29	27.50
1988/10/30	25.90
1988/10/31	21.80
1988/11/01	16.80
1988/11/02	16.40
1988/11/03	16.00
1988/11/04	17.90
1988/11/05	16.80
1988/11/06	14.10
1988/11/07	12.70
1988/11/08	13.40
1988/11/09	17.90
1988/11/10	21.30
1988/11/11	20.80
1988/11/12	17.50
1988/11/13	18.70
1988/11/14	17.10
1988/11/15	20.20
1988/11/16	15.60
1988/11/17	19.20
1988/11/18	21.80
1988/11/19	25.40
1988/11/20	29.50
1988/11/21	29.00
1988/11/22	25.40
1988/11/23	21.80
1988/11/24	20.20
1988/11/25	19.20
1988/11/26	18.30
1988/11/27	16.80
1988/11/28	16.00
1988/11/29	15.20
1988/11/30	15.20
1988/12/01	14.40
1988/12/02	13.80
1988/12/03	13.40
1988/12/04	12.30
1988/12/05	12.00
1988/12/06	11.00
1988/12/07	10.70
1988/12/08	9.80
1988/12/09	8.90
1988/12/10	8.60
1988/12/11	8.00
1988/12/12	7.80
1988/12/13	6.70
1988/12/14	6.20
1988/12/15	6.00
1988/12/16	6.20
1988/12/17	6.20
1988/12/18	5.50
1988/12/19	5.20
1988/12/20	5.00
1988/12/21	4.70
1988/12/22	4.30
1988/12/23	4.30
1988/12/24	4.00
1988/12/25	4.00
1988/12/26	4.00
1988/12/27	3.80
1988/12/28	3.50
1988/12/29	3.50
1988/12/30	3.50
1988/12/31	3.50
#===========================================
# Number of observations = 366 / 366
# Average = 50.16