1980/01/01	9.10
1980/01/02	8.80
1980/01/03	8.50
1980/01/04	8.50
1980/01/05	8.50
1980/01/06	8.50
1980/01/07	8.80
1980/01/08	8.80
1980/01/09	8.80
1980/01/10	9.10
1980/01/11	9.10
1980/01/12	9.10
1980/01/13	8.80
1980/01/14	8.80
1980/01/15	8.50
1980/01/16	8.50
1980/01/17	8.80
1980/01/18	8.80
1980/01/19	8.80
1980/01/20	8.80
1980/01/21	8.80
1980/01/22	7.90
1980/01/23	7.90
1980/01/24	7.90
1980/01/25	7.90
1980/01/26	7.90
1980/01/27	7.90
1980/01/28	7.90
1980/01/29	7.60
1980/01/30	7.90
1980/01/31	8.20
1980/02/01	7.60
1980/02/02	7.30
1980/02/03	7.30
1980/02/04	7.00
1980/02/05	7.00
1980/02/06	7.00
1980/02/07	7.00
1980/02/08	7.00
1980/02/09	7.00
1980/02/10	7.00
1980/02/11	7.30
1980/02/12	6.40
1980/02/13	6.10
1980/02/14	6.10
1980/02/15	6.10
1980/02/16	6.10
1980/02/17	6.10
1980/02/18	6.10
1980/02/19	6.10
1980/02/20	6.10
1980/02/21	6.10
1980/02/22	6.70
1980/02/23	7.00
1980/02/24	7.00
1980/02/25	6.10
1980/02/26	4.90
1980/02/27	4.90
1980/02/28	4.90
1980/02/29	4.90
1980/03/01	4.90
1980/03/02	4.90
1980/03/03	4.60
1980/03/04	4.60
1980/03/05	4.60
1980/03/06	4.60
1980/03/07	4.60
1980/03/08	4.60
1980/03/09	4.60
1980/03/10	4.60
1980/03/11	4.30
1980/03/12	4.90
1980/03/13	6.10
1980/03/14	6.10
1980/03/15	8.20
1980/03/16	7.30
1980/03/17	7.60
1980/03/18	9.40
1980/03/19	9.40
1980/03/20	6.10
1980/03/21	5.80
1980/03/22	5.50
1980/03/23	4.90
1980/03/24	4.90
1980/03/25	8.20
1980/03/26	11.20
1980/03/27	7.90
1980/03/28	10.00
1980/03/29	7.30
1980/03/30	6.70
1980/03/31	5.80
1980/04/01	5.60
1980/04/02	20.00
1980/04/03	8.40
1980/04/04	6.00
1980/04/05	5.20
1980/04/06	4.40
1980/04/07	4.40
1980/04/08	7.20
1980/04/09	8.00
1980/04/10	6.40
1980/04/11	5.20
1980/04/12	4.80
1980/04/13	4.40
1980/04/14	4.00
1980/04/15	3.94
1980/04/16	3.89
1980/04/17	3.83
1980/04/18	3.77
1980/04/19	7.60
1980/04/20	5.60
1980/04/21	4.00
1980/04/22	3.89
1980/04/23	3.83
1980/04/24	3.77
1980/04/25	3.77
1980/04/26	3.71
1980/04/27	3.71
1980/04/28	3.71
1980/04/29	3.66
1980/04/30	3.60
1980/05/01	3.66
1980/05/02	5.20
1980/05/03	3.83
1980/05/04	4.40
1980/05/05	4.00
1980/05/06	6.00
1980/05/07	6.80
1980/05/08	4.80
1980/05/09	3.94
1980/05/10	3.89
1980/05/11	3.83
1980/05/12	3.83
1980/05/13	3.71
1980/05/14	3.66
1980/05/15	3.66
1980/05/16	3.66
1980/05/17	3.66
1980/05/18	3.77
1980/05/19	3.94
1980/05/20	11.20
1980/05/21	17.50
1980/05/22	17.50
1980/05/23	68.00
1980/05/24	89.00
1980/05/25	68.90
1980/05/26	36.60
1980/05/27	64.40
1980/05/28	47.80
1980/05/29	40.60
1980/05/30	25.60
1980/05/31	18.50
1980/06/01	15.50
1980/06/02	12.50
1980/06/03	11.20
1980/06/04	10.80
1980/06/05	10.40
1980/06/06	9.20
1980/06/07	8.80
1980/06/08	8.00
1980/06/09	8.00
1980/06/10	8.80
1980/06/11	12.50
1980/06/12	15.00
1980/06/13	42.20
1980/06/14	51.80
1980/06/15	27.40
1980/06/16	18.00
1980/06/17	18.00
1980/06/18	25.00
1980/06/19	25.60
1980/06/20	37.40
1980/06/21	85.00
1980/06/22	78.00
1980/06/23	63.50
1980/06/24	66.20
1980/06/25	40.60
1980/06/26	32.20
1980/06/27	46.20
1980/06/28	39.00
1980/06/29	29.40
1980/06/30	23.80
1980/07/01	21.00
1980/07/02	19.50
1980/07/03	16.50
1980/07/04	18.00
1980/07/05	19.50
1980/07/06	21.00
1980/07/07	20.00
1980/07/08	18.50
1980/07/09	18.50
1980/07/10	18.00
1980/07/11	17.50
1980/07/12	17.00
1980/07/13	16.50
1980/07/14	19.50
1980/07/15	32.20
1980/07/16	27.40
1980/07/17	23.80
1980/07/18	22.00
1980/07/19	20.50
1980/07/20	20.50
1980/07/21	26.20
1980/07/22	28.70
1980/07/23	39.00
1980/07/24	45.40
1980/07/25	45.40
1980/07/26	44.60
1980/07/27	62.60
1980/07/28	72.50
1980/07/29	55.00
1980/07/30	46.20
1980/07/31	40.60
1980/08/01	39.00
1980/08/02	39.00
1980/08/03	40.60
1980/08/04	34.30
1980/08/05	30.10
1980/08/06	29.40
1980/08/07	30.80
1980/08/08	28.70
1980/08/09	31.50
1980/08/10	27.40
1980/08/11	26.20
1980/08/12	25.00
1980/08/13	25.60
1980/08/14	25.00
1980/08/15	23.20
1980/08/16	21.50
1980/08/17	23.20
1980/08/18	31.50
1980/08/19	52.60
1980/08/20	66.20
1980/08/21	77.00
1980/08/22	64.40
1980/08/23	54.20
1980/08/24	68.90
1980/08/25	79.00
1980/08/26	78.00
1980/08/27	66.20
1980/08/28	54.20
1980/08/29	47.80
1980/08/30	50.20
1980/08/31	57.40
1980/09/01	71.60
1980/09/02	106.00
1980/09/03	108.10
1980/09/04	88.00
1980/09/05	93.00
1980/09/06	95.00
1980/09/07	236.50
1980/09/08	338.40
1980/09/09	229.00
1980/09/10	167.40
1980/09/11	164.80
1980/09/12	131.20
1980/09/13	109.20
1980/09/14	83.00
1980/09/15	80.00
1980/09/16	77.00
1980/09/17	100.00
1980/09/18	88.00
1980/09/19	80.00
1980/09/20	68.00
1980/09/21	59.00
1980/09/22	56.60
1980/09/23	75.20
1980/09/24	66.20
1980/09/25	61.70
1980/09/26	54.20
1980/09/27	53.40
1980/09/28	61.70
1980/09/29	55.00
1980/09/30	53.40
1980/10/01	51.80
1980/10/02	74.30
1980/10/03	76.10
1980/10/04	85.00
1980/10/05	95.00
1980/10/06	59.00
1980/10/07	103.00
1980/10/08	152.80
1980/10/09	105.00
1980/10/10	74.30
1980/10/11	68.90
1980/10/12	60.80
1980/10/13	57.40
1980/10/14	48.60
1980/10/15	40.60
1980/10/16	39.80
1980/10/17	47.00
1980/10/18	45.40
1980/10/19	51.80
1980/10/20	61.70
1980/10/21	76.10
1980/10/22	54.20
1980/10/23	48.60
1980/10/24	43.80
1980/10/25	39.00
1980/10/26	35.80
1980/10/27	35.80
1980/10/28	34.30
1980/10/29	32.90
1980/10/30	31.50
1980/10/31	32.20
1980/11/01	32.90
1980/11/02	32.20
1980/11/03	31.50
1980/11/04	32.90
1980/11/05	31.50
1980/11/06	30.10
1980/11/07	29.40
1980/11/08	30.10
1980/11/09	34.30
1980/11/10	32.20
1980/11/11	30.10
1980/11/12	28.70
1980/11/13	28.00
1980/11/14	28.00
1980/11/15	28.00
1980/11/16	27.40
1980/11/17	26.80
1980/11/18	26.80
1980/11/19	28.70
1980/11/20	30.80
1980/11/21	28.00
1980/11/22	26.80
1980/11/23	26.20
1980/11/24	25.60
1980/11/25	25.60
1980/11/26	25.00
1980/11/27	24.40
1980/11/28	23.80
1980/11/29	23.20
1980/11/30	23.20
1980/12/01	22.60
1980/12/02	22.00
1980/12/03	22.00
1980/12/04	21.50
1980/12/05	21.50
1980/12/06	21.00
1980/12/07	20.50
1980/12/08	20.00
1980/12/09	20.00
1980/12/10	20.00
1980/12/11	20.50
1980/12/12	20.50
1980/12/13	24.40
1980/12/14	32.20
1980/12/15	26.80
1980/12/16	22.00
1980/12/17	20.50
1980/12/18	19.00
1980/12/19	18.00
1980/12/20	17.00
1980/12/21	17.00
1980/12/22	17.50
1980/12/23	17.00
1980/12/24	17.00
1980/12/25	17.00
1980/12/26	17.00
1980/12/27	17.00
1980/12/28	17.00
1980/12/29	17.00
1980/12/30	17.00
1980/12/31	17.00
#===========================================
# Number of observations = 366 / 366
# Total = 10976.2
# Average = 29.99