1987/01/01	16.20
1987/01/02	16.20
1987/01/03	16.20
1987/01/04	15.45
1987/01/05	15.45
1987/01/06	15.45
1987/01/07	15.45
1987/01/08	14.70
1987/01/09	14.70
1987/01/10	14.70
1987/01/11	14.70
1987/01/12	13.95
1987/01/13	13.95
1987/01/14	13.95
1987/01/15	13.95
1987/01/16	13.95
1987/01/17	13.95
1987/01/18	13.95
1987/01/19	13.95
1987/01/20	13.20
1987/01/21	13.20
1987/01/22	13.20
1987/01/23	13.20
1987/01/24	13.20
1987/01/25	13.20
1987/01/26	13.20
1987/01/27	12.45
1987/01/28	12.45
1987/01/29	12.45
1987/01/30	12.45
1987/01/31	12.45
1987/02/01	12.45
1987/02/02	12.45
1987/02/03	12.45
1987/02/04	11.70
1987/02/05	11.70
1987/02/06	11.70
1987/02/07	11.70
1987/02/08	11.70
1987/02/09	11.70
1987/02/10	11.70
1987/02/11	13.95
1987/02/12	14.70
1987/02/13	12.45
1987/02/14	11.70
1987/02/15	11.70
1987/02/16	10.95
1987/02/17	10.95
1987/02/18	10.95
1987/02/19	11.70
1987/02/20	10.95
1987/02/21	11.70
1987/02/22	13.20
1987/02/23	12.45
1987/02/24	11.70
1987/02/25	10.20
1987/02/26	10.20
1987/02/27	9.58
1987/02/28	9.58
1987/03/01	9.58
1987/03/02	9.58
1987/03/03	9.58
1987/03/04	11.70
1987/03/05	11.70
1987/03/06	12.45
1987/03/07	11.70
1987/03/08	10.20
1987/03/09	9.58
1987/03/10	9.58
1987/03/11	9.58
1987/03/12	8.96
1987/03/13	8.96
1987/03/14	8.96
1987/03/15	8.34
1987/03/16	8.34
1987/03/17	8.34
1987/03/18	8.34
1987/03/19	8.34
1987/03/20	8.34
1987/03/21	8.34
1987/03/22	7.72
1987/03/23	7.72
1987/03/24	7.72
1987/03/25	7.72
1987/03/26	7.10
1987/03/27	7.10
1987/03/28	7.10
1987/03/29	7.10
1987/03/30	7.10
1987/03/31	7.10
1987/04/01	10.20
1987/04/02	9.60
1987/04/03	9.60
1987/04/04	9.00
1987/04/05	9.00
1987/04/06	8.40
1987/04/07	8.40
1987/04/08	8.40
1987/04/09	9.60
1987/04/10	9.60
1987/04/11	9.00
1987/04/12	8.40
1987/04/13	8.40
1987/04/14	8.40
1987/04/15	7.80
1987/04/16	7.80
1987/04/17	7.80
1987/04/18	8.40
1987/04/19	8.40
1987/04/20	7.80
1987/04/21	7.80
1987/04/22	8.40
1987/04/23	10.20
1987/04/24	9.00
1987/04/25	8.40
1987/04/26	7.80
1987/04/27	7.20
1987/04/28	7.20
1987/04/29	8.40
1987/04/30	8.40
1987/05/01	12.00
1987/05/02	10.80
1987/05/03	9.00
1987/05/04	7.80
1987/05/05	22.50
1987/05/06	23.20
1987/05/07	16.20
1987/05/08	12.00
1987/05/09	9.60
1987/05/10	8.40
1987/05/11	7.80
1987/05/12	7.80
1987/05/13	7.20
1987/05/14	7.20
1987/05/15	9.00
1987/05/16	9.00
1987/05/17	8.40
1987/05/18	7.20
1987/05/19	9.00
1987/05/20	10.20
1987/05/21	7.80
1987/05/22	6.60
1987/05/23	6.60
1987/05/24	6.60
1987/05/25	6.00
1987/05/26	6.00
1987/05/27	6.00
1987/05/28	6.00
1987/05/29	6.00
1987/05/30	12.70
1987/05/31	11.40
1987/06/01	9.00
1987/06/02	12.00
1987/06/03	23.90
1987/06/04	33.00
1987/06/05	25.30
1987/06/06	24.60
1987/06/07	16.20
1987/06/08	19.00
1987/06/09	35.40
1987/06/10	33.80
1987/06/11	25.30
1987/06/12	21.80
1987/06/13	15.50
1987/06/14	15.50
1987/06/15	14.80
1987/06/16	14.10
1987/06/17	19.00
1987/06/18	30.90
1987/06/19	21.10
1987/06/20	14.80
1987/06/21	12.70
1987/06/22	12.00
1987/06/23	12.00
1987/06/24	10.80
1987/06/25	9.60
1987/06/26	10.20
1987/06/27	10.20
1987/06/28	9.00
1987/06/29	49.00
1987/06/30	73.20
1987/07/01	38.60
1987/07/02	23.20
1987/07/03	19.00
1987/07/04	15.50
1987/07/05	15.50
1987/07/06	15.50
1987/07/07	23.90
1987/07/08	23.20
1987/07/09	24.60
1987/07/10	22.50
1987/07/11	21.10
1987/07/12	19.00
1987/07/13	16.20
1987/07/14	15.50
1987/07/15	15.50
1987/07/16	16.20
1987/07/17	16.20
1987/07/18	26.00
1987/07/19	21.10
1987/07/20	18.30
1987/07/21	17.60
1987/07/22	17.60
1987/07/23	15.50
1987/07/24	16.90
1987/07/25	29.50
1987/07/26	28.10
1987/07/27	23.90
1987/07/28	22.50
1987/07/29	21.10
1987/07/30	19.70
1987/07/31	26.00
1987/08/01	89.50
1987/08/02	76.90
1987/08/03	57.50
1987/08/04	56.65
1987/08/05	41.80
1987/08/06	34.60
1987/08/07	30.20
1987/08/08	31.60
1987/08/09	27.40
1987/08/10	32.30
1987/08/11	28.10
1987/08/12	28.10
1987/08/13	27.40
1987/08/14	26.00
1987/08/15	23.90
1987/08/16	23.20
1987/08/17	30.90
1987/08/18	207.40
1987/08/19	134.80
1987/08/20	82.60
1987/08/21	57.50
1987/08/22	68.70
1987/08/23	586.20
1987/08/24	775.40
1987/08/25	358.25
1987/08/26	216.50
1987/08/27	151.40
1987/08/28	112.90
1987/08/29	91.50
1987/08/30	80.70
1987/08/31	70.50
1987/09/01	66.00
1987/09/02	75.95
1987/09/03	103.50
1987/09/04	78.80
1987/09/05	98.50
1987/09/06	85.50
1987/09/07	86.50
1987/09/08	107.65
1987/09/09	92.50
1987/09/10	90.50
1987/09/11	81.65
1987/09/12	72.30
1987/09/13	66.00
1987/09/14	70.50
1987/09/15	68.70
1987/09/16	66.90
1987/09/17	60.90
1987/09/18	61.75
1987/09/19	66.00
1987/09/20	79.75
1987/09/21	92.50
1987/09/22	74.10
1987/09/23	64.30
1987/09/24	60.90
1987/09/25	57.50
1987/09/26	69.60
1987/09/27	60.90
1987/09/28	54.95
1987/09/29	53.25
1987/09/30	56.65
1987/10/01	55.80
1987/10/02	64.30
1987/10/03	65.15
1987/10/04	55.80
1987/10/05	61.75
1987/10/06	55.80
1987/10/07	53.25
1987/10/08	53.25
1987/10/09	60.05
1987/10/10	59.20
1987/10/11	54.10
1987/10/12	49.85
1987/10/13	49.85
1987/10/14	48.20
1987/10/15	48.20
1987/10/16	47.40
1987/10/17	49.00
1987/10/18	44.20
1987/10/19	45.00
1987/10/20	44.20
1987/10/21	46.60
1987/10/22	42.60
1987/10/23	42.60
1987/10/24	47.40
1987/10/25	49.85
1987/10/26	39.60
1987/10/27	33.35
1987/10/28	31.05
1987/10/29	28.75
1987/10/30	27.60
1987/10/31	26.45
1987/11/01	25.30
1987/11/02	25.30
1987/11/03	32.20
1987/11/04	28.75
1987/11/05	43.00
1987/11/06	28.75
1987/11/07	28.75
1987/11/08	26.45
1987/11/09	31.05
1987/11/10	27.60
1987/11/11	25.30
1987/11/12	24.15
1987/11/13	24.15
1987/11/14	23.00
1987/11/15	23.00
1987/11/16	22.35
1987/11/17	24.15
1987/11/18	23.00
1987/11/19	22.35
1987/11/20	21.70
1987/11/21	21.05
1987/11/22	19.75
1987/11/23	19.75
1987/11/24	19.75
1987/11/25	19.10
1987/11/26	19.10
1987/11/27	18.45
1987/11/28	18.45
1987/11/29	18.45
1987/11/30	17.80
1987/12/01	17.80
1987/12/02	17.80
1987/12/03	17.15
1987/12/04	16.50
1987/12/05	16.50
1987/12/06	16.50
1987/12/07	16.50
1987/12/08	15.90
1987/12/09	15.90
1987/12/10	15.90
1987/12/11	15.30
1987/12/12	15.30
1987/12/13	15.30
1987/12/14	15.30
1987/12/15	15.30
1987/12/16	14.70
1987/12/17	14.70
1987/12/18	14.70
1987/12/19	14.10
1987/12/20	14.10
1987/12/21	14.10
1987/12/22	13.50
1987/12/23	13.50
1987/12/24	13.50
1987/12/25	13.50
1987/12/26	13.50
1987/12/27	13.50
1987/12/28	13.50
1987/12/29	13.50
1987/12/30	12.90
1987/12/31	12.90
#===========================================
# Number of observations = 365 / 365
# Average = 31.28