1981/01/01	31.40
1981/01/02	31.40
1981/01/03	29.60
1981/01/04	26.90
1981/01/05	26.90
1981/01/06	25.30
1981/01/07	24.60
1981/01/08	24.60
1981/01/09	25.30
1981/01/10	24.60
1981/01/11	24.60
1981/01/12	23.90
1981/01/13	22.50
1981/01/14	21.10
1981/01/15	18.40
1981/01/16	17.20
1981/01/17	17.20
1981/01/18	17.20
1981/01/19	16.60
1981/01/20	16.60
1981/01/21	15.40
1981/01/22	15.40
1981/01/23	15.40
1981/01/24	13.60
1981/01/25	14.20
1981/01/26	14.20
1981/01/27	14.20
1981/01/28	13.60
1981/01/29	13.60
1981/01/30	14.20
1981/01/31	14.20
1981/02/01	13.00
1981/02/02	12.00
1981/02/03	12.00
1981/02/04	12.50
1981/02/05	10.50
1981/02/06	10.50
1981/02/07	10.50
1981/02/08	10.50
1981/02/09	11.50
1981/02/10	12.00
1981/02/11	12.50
1981/02/12	13.60
1981/02/13	13.60
1981/02/14	13.00
1981/02/15	12.00
1981/02/16	11.50
1981/02/17	12.00
1981/02/18	9.50
1981/02/19	8.00
1981/02/20	7.40
1981/02/21	7.40
1981/02/22	7.40
1981/02/23	7.10
1981/02/24	6.50
1981/02/25	5.30
1981/02/26	4.40
1981/02/27	4.40
1981/02/28	4.10
1981/03/01	4.10
1981/03/02	3.80
1981/03/03	3.80
1981/03/04	3.80
1981/03/05	3.50
1981/03/06	3.20
1981/03/07	3.20
1981/03/08	2.90
1981/03/09	2.90
1981/03/10	2.60
1981/03/11	2.30
1981/03/12	2.30
1981/03/13	2.00
1981/03/14	2.00
1981/03/15	1.90
1981/03/16	1.80
1981/03/17	1.70
1981/03/18	1.70
1981/03/19	1.60
1981/03/20	1.60
1981/03/21	1.50
1981/03/22	1.50
1981/03/23	1.40
1981/03/24	1.30
1981/03/25	1.30
1981/03/26	1.30
1981/03/27	1.20
1981/03/28	1.20
1981/03/29	1.10
1981/03/30	1.00
1981/03/31	1.00
1981/04/01	0
1981/04/02	0
1981/04/03	0
1981/04/04	0
1981/04/05	0
1981/04/06	0
1981/04/07	0
1981/04/08	0
1981/04/09	0
1981/04/10	1.90
1981/04/11	1.90
1981/04/12	1.81
1981/04/13	1.81
1981/04/14	1.73
1981/04/15	1.73
1981/04/16	1.99
1981/04/17	1.81
1981/04/18	1.73
1981/04/19	1.64
1981/04/20	1.64
1981/04/21	2.08
1981/04/22	2.25
1981/04/23	1.99
1981/04/24	1.81
1981/04/25	1.90
1981/04/26	1.90
1981/04/27	2.08
1981/04/28	2.34
1981/04/29	2.95
1981/04/30	3.56
1981/05/01	3.39
1981/05/02	3.56
1981/05/03	3.74
1981/05/04	3.82
1981/05/05	5.20
1981/05/06	14.75
1981/05/07	18.00
1981/05/08	24.30
1981/05/09	21.60
1981/05/10	16.70
1981/05/11	12.80
1981/05/12	13.45
1981/05/13	12.80
1981/05/14	11.50
1981/05/15	12.15
1981/05/16	13.45
1981/05/17	16.70
1981/05/18	19.80
1981/05/19	23.40
1981/05/20	33.00
1981/05/21	69.00
1981/05/22	70.90
1981/05/23	124.25
1981/05/24	117.00
1981/05/25	121.80
1981/05/26	148.00
1981/05/27	172.70
1981/05/28	133.00
1981/05/29	121.80
1981/05/30	134.25
1981/05/31	113.40
1981/06/01	102.95
1981/06/02	118.20
1981/06/03	121.80
1981/06/04	102.95
1981/06/05	93.75
1981/06/06	88.00
1981/06/07	72.80
1981/06/08	65.80
1981/06/09	76.60
1981/06/10	88.00
1981/06/11	78.50
1981/06/12	74.70
1981/06/13	65.80
1981/06/14	61.00
1981/06/15	62.60
1981/06/16	54.60
1981/06/17	135.50
1981/06/18	53.00
1981/06/19	59.40
1981/06/20	53.00
1981/06/21	53.00
1981/06/22	54.60
1981/06/23	51.60
1981/06/24	48.80
1981/06/25	44.60
1981/06/26	39.00
1981/06/27	51.60
1981/06/28	50.20
1981/06/29	43.20
1981/06/30	37.80
1981/07/01	30.60
1981/07/02	26.10
1981/07/03	23.40
1981/07/04	22.50
1981/07/05	21.60
1981/07/06	33.00
1981/07/07	109.85
1981/07/08	269.10
1981/07/09	253.15
1981/07/10	121.80
1981/07/11	98.35
1981/07/12	96.05
1981/07/13	70.90
1981/07/14	54.60
1981/07/15	50.20
1981/07/16	43.20
1981/07/17	56.20
1981/07/18	117.00
1981/07/19	102.95
1981/07/20	98.35
1981/07/21	157.10
1981/07/22	241.60
1981/07/23	267.65
1981/07/24	158.40
1981/07/25	129.25
1981/07/26	136.75
1981/07/27	130.50
1981/07/28	130.50
1981/07/29	145.50
1981/07/30	153.20
1981/07/31	175.30
1981/08/01	222.00
1981/08/02	226.20
1981/08/03	236.00
1981/08/04	210.80
1981/08/05	174.00
1981/08/06	188.40
1981/08/07	243.00
1981/08/08	264.75
1981/08/09	245.90
1981/08/10	167.50
1981/08/11	168.80
1981/08/12	256.05
1981/08/13	311.00
1981/08/14	253.15
1981/08/15	176.60
1981/08/16	145.50
1981/08/17	120.60
1981/08/18	106.40
1981/08/19	109.85
1981/08/20	164.90
1981/08/21	216.40
1981/08/22	198.20
1981/08/23	168.80
1981/08/24	140.50
1981/08/25	120.60
1981/08/26	107.55
1981/08/27	90.30
1981/08/28	80.40
1981/08/29	86.10
1981/08/30	82.30
1981/08/31	76.60
1981/09/01	97.20
1981/09/02	196.80
1981/09/03	162.30
1981/09/04	145.50
1981/09/05	151.90
1981/09/06	189.80
1981/09/07	294.50
1981/09/08	417.00
1981/09/09	433.00
1981/09/10	321.50
1981/09/11	210.80
1981/09/12	157.10
1981/09/13	136.75
1981/09/14	118.20
1981/09/15	98.35
1981/09/16	92.60
1981/09/17	91.45
1981/09/18	91.45
1981/09/19	82.30
1981/09/20	82.30
1981/09/21	78.50
1981/09/22	76.60
1981/09/23	70.90
1981/09/24	65.80
1981/09/25	76.60
1981/09/26	91.45
1981/09/27	86.10
1981/09/28	78.50
1981/09/29	91.45
1981/09/30	88.00
1981/10/01	74.70
1981/10/02	65.80
1981/10/03	59.40
1981/10/04	57.80
1981/10/05	61.00
1981/10/06	61.00
1981/10/07	61.00
1981/10/08	65.80
1981/10/09	89.15
1981/10/10	128.00
1981/10/11	150.60
1981/10/12	129.25
1981/10/13	109.85
1981/10/14	104.10
1981/10/15	100.65
1981/10/16	97.20
1981/10/17	90.30
1981/10/18	102.95
1981/10/19	104.10
1981/10/20	98.35
1981/10/21	91.45
1981/10/22	82.30
1981/10/23	76.60
1981/10/24	69.00
1981/10/25	72.80
1981/10/26	84.20
1981/10/27	99.50
1981/10/28	93.75
1981/10/29	84.20
1981/10/30	72.80
1981/10/31	65.80
1981/11/01	61.00
1981/11/02	56.20
1981/11/03	54.60
1981/11/04	53.00
1981/11/05	53.00
1981/11/06	53.00
1981/11/07	51.60
1981/11/08	56.20
1981/11/09	86.10
1981/11/10	130.50
1981/11/11	118.20
1981/11/12	100.65
1981/11/13	94.90
1981/11/14	91.45
1981/11/15	91.45
1981/11/16	109.85
1981/11/17	151.90
1981/11/18	223.40
1981/11/19	213.60
1981/11/20	194.00
1981/11/21	149.30
1981/11/22	126.75
1981/11/23	114.60
1981/11/24	106.40
1981/11/25	102.95
1981/11/26	99.50
1981/11/27	96.05
1981/11/28	93.75
1981/11/29	92.60
1981/11/30	90.30
1981/12/01	89.15
1981/12/02	86.10
1981/12/03	82.30
1981/12/04	80.40
1981/12/05	78.50
1981/12/06	76.60
1981/12/07	76.60
1981/12/08	72.80
1981/12/09	70.90
1981/12/10	69.00
1981/12/11	69.00
1981/12/12	70.90
1981/12/13	74.70
1981/12/14	78.50
1981/12/15	89.15
1981/12/16	91.45
1981/12/17	88.00
1981/12/18	80.40
1981/12/19	76.60
1981/12/20	72.80
1981/12/21	69.00
1981/12/22	64.20
1981/12/23	62.60
1981/12/24	64.20
1981/12/25	59.40
1981/12/26	57.80
1981/12/27	57.80
1981/12/28	56.20
1981/12/29	53.00
1981/12/30	51.60
1981/12/31	51.60
#===========================================
# Number of observations = 365 / 365
# Total = 26021.2
# Average = 71.29