1981/01/01	27.25
1981/01/02	26.50
1981/01/03	26.50
1981/01/04	25.75
1981/01/05	25.75
1981/01/06	25.75
1981/01/07	25.00
1981/01/08	24.25
1981/01/09	23.50
1981/01/10	22.75
1981/01/11	22.75
1981/01/12	22.75
1981/01/13	22.75
1981/01/14	22.00
1981/01/15	22.00
1981/01/16	21.25
1981/01/17	21.25
1981/01/18	20.50
1981/01/19	19.75
1981/01/20	19.75
1981/01/21	19.00
1981/01/22	19.00
1981/01/23	18.25
1981/01/24	18.25
1981/01/25	17.50
1981/01/26	17.50
1981/01/27	17.50
1981/01/28	17.50
1981/01/29	17.50
1981/01/30	17.50
1981/01/31	17.50
1981/02/01	16.75
1981/02/02	16.75
1981/02/03	16.75
1981/02/04	16.75
1981/02/05	16.75
1981/02/06	16.00
1981/02/07	14.50
1981/02/08	14.50
1981/02/09	13.75
1981/02/10	13.75
1981/02/11	13.75
1981/02/12	13.75
1981/02/13	13.00
1981/02/14	13.00
1981/02/15	13.00
1981/02/16	13.00
1981/02/17	13.00
1981/02/18	12.35
1981/02/19	12.35
1981/02/20	11.70
1981/02/21	12.35
1981/02/22	12.35
1981/02/23	12.35
1981/02/24	11.70
1981/02/25	11.70
1981/02/26	11.05
1981/02/27	11.05
1981/02/28	11.05
1981/03/01	10.40
1981/03/02	10.40
1981/03/03	10.40
1981/03/04	10.40
1981/03/05	10.40
1981/03/06	10.40
1981/03/07	10.40
1981/03/08	10.40
1981/03/09	9.75
1981/03/10	9.75
1981/03/11	9.75
1981/03/12	10.40
1981/03/13	9.75
1981/03/14	9.75
1981/03/15	9.75
1981/03/16	9.10
1981/03/17	8.45
1981/03/18	8.45
1981/03/19	8.45
1981/03/20	8.45
1981/03/21	7.80
1981/03/22	7.80
1981/03/23	7.15
1981/03/24	7.15
1981/03/25	7.15
1981/03/26	7.15
1981/03/27	6.50
1981/03/28	6.50
1981/03/29	6.50
1981/03/30	6.50
1981/03/31	8.45
1981/04/01	8.50
1981/04/02	8.50
1981/04/03	9.00
1981/04/04	9.50
1981/04/05	9.00
1981/04/06	9.00
1981/04/07	9.00
1981/04/08	9.00
1981/04/09	8.50
1981/04/10	8.50
1981/04/11	8.00
1981/04/12	11.50
1981/04/13	13.50
1981/04/14	13.50
1981/04/15	15.00
1981/04/16	18.50
1981/04/17	14.50
1981/04/18	13.00
1981/04/19	16.00
1981/04/20	15.00
1981/04/21	13.00
1981/04/22	12.00
1981/04/23	13.50
1981/04/24	12.50
1981/04/25	11.00
1981/04/26	11.50
1981/04/27	15.00
1981/04/28	17.50
1981/04/29	14.50
1981/04/30	15.50
1981/05/01	15.50
1981/05/02	14.00
1981/05/03	13.00
1981/05/04	17.50
1981/05/05	21.50
1981/05/06	23.80
1981/05/07	19.50
1981/05/08	17.50
1981/05/09	19.50
1981/05/10	20.00
1981/05/11	19.50
1981/05/12	18.00
1981/05/13	28.00
1981/05/14	32.80
1981/05/15	51.00
1981/05/16	50.00
1981/05/17	55.00
1981/05/18	75.60
1981/05/19	47.00
1981/05/20	34.40
1981/05/21	28.80
1981/05/22	224.15
1981/05/23	123.20
1981/05/24	94.20
1981/05/25	55.00
1981/05/26	43.20
1981/05/27	39.60
1981/05/28	36.90
1981/05/29	36.00
1981/05/30	48.00
1981/05/31	60.50
1981/06/01	33.60
1981/06/02	36.00
1981/06/03	56.10
1981/06/04	42.30
1981/06/05	34.40
1981/06/06	30.40
1981/06/07	28.00
1981/06/08	29.60
1981/06/09	34.40
1981/06/10	30.40
1981/06/11	26.80
1981/06/12	26.20
1981/06/13	25.60
1981/06/14	25.00
1981/06/15	25.00
1981/06/16	25.60
1981/06/17	32.00
1981/06/18	32.00
1981/06/19	36.00
1981/06/20	177.90
1981/06/21	99.80
1981/06/22	70.80
1981/06/23	62.70
1981/06/24	183.45
1981/06/25	301.93
1981/06/26	216.75
1981/06/27	142.40
1981/06/28	107.20
1981/06/29	87.60
1981/06/30	69.60
1981/07/01	62.70
1981/07/02	54.00
1981/07/03	46.00
1981/07/04	45.00
1981/07/05	258.00
1981/07/06	1964.00
1981/07/07	2197.60
1981/07/08	1480.90
1981/07/09	646.00
1981/07/10	741.60
1981/07/11	860.00
1981/07/12	504.70
1981/07/13	374.50
1981/07/14	312.87
1981/07/15	251.40
1981/07/16	249.20
1981/07/17	228.10
1981/07/18	351.13
1981/07/19	454.50
1981/07/20	414.00
1981/07/21	376.00
1981/07/22	370.26
1981/07/23	301.93
1981/07/24	345.67
1981/07/25	449.10
1981/07/26	390.60
1981/07/27	658.80
1981/07/28	435.60
1981/07/29	446.40
1981/07/30	468.00
1981/07/31	516.30
1981/08/01	468.00
1981/08/02	388.00
1981/08/03	380.50
1981/08/04	470.80
1981/08/05	922.00
1981/08/06	649.20
1981/08/07	490.40
1981/08/08	406.20
1981/08/09	337.47
1981/08/10	307.40
1981/08/11	593.30
1981/08/12	419.40
1981/08/13	348.40
1981/08/14	286.60
1981/08/15	266.80
1981/08/16	271.20
1981/08/17	345.67
1981/08/18	251.40
1981/08/19	275.60
1981/08/20	301.93
1981/08/21	249.20
1981/08/22	242.80
1981/08/23	198.25
1981/08/24	222.30
1981/08/25	187.15
1981/08/26	170.50
1981/08/27	200.10
1981/08/28	275.60
1981/08/29	226.00
1981/08/30	183.45
1981/08/31	168.65
1981/09/01	187.15
1981/09/02	353.86
1981/09/03	401.00
1981/09/04	484.80
1981/09/05	482.00
1981/09/06	587.10
1981/09/07	621.20
1981/09/08	522.10
1981/09/09	401.00
1981/09/10	359.33
1981/09/11	386.50
1981/09/12	296.46
1981/09/13	249.20
1981/09/14	222.30
1981/09/15	326.53
1981/09/16	201.95
1981/09/17	183.45
1981/09/18	168.65
1981/09/19	155.70
1981/09/20	148.80
1981/09/21	137.60
1981/09/22	123.20
1981/09/23	118.40
1981/09/24	115.20
1981/09/25	110.40
1981/09/26	102.60
1981/09/27	102.60
1981/09/28	97.00
1981/09/29	86.40
1981/09/30	82.80
1981/10/01	82.80
1981/10/02	85.20
1981/10/03	110.40
1981/10/04	121.60
1981/10/05	176.05
1981/10/06	189.00
1981/10/07	139.20
1981/10/08	132.80
1981/10/09	126.40
1981/10/10	134.40
1981/10/11	136.00
1981/10/12	129.60
1981/10/13	124.80
1981/10/14	115.20
1981/10/15	112.00
1981/10/16	88.80
1981/10/17	87.60
1981/10/18	90.00
1981/10/19	95.60
1981/10/20	107.20
1981/10/21	99.80
1981/10/22	86.40
1981/10/23	79.20
1981/10/24	80.40
1981/10/25	85.20
1981/10/26	132.80
1981/10/27	102.60
1981/10/28	85.20
1981/10/29	75.60
1981/10/30	72.00
1981/10/31	67.20
1981/11/01	66.00
1981/11/02	62.70
1981/11/03	60.50
1981/11/04	58.30
1981/11/05	56.10
1981/11/06	54.00
1981/11/07	53.00
1981/11/08	54.00
1981/11/09	55.00
1981/11/10	54.00
1981/11/11	50.00
1981/11/12	48.00
1981/11/13	47.00
1981/11/14	47.00
1981/11/15	52.00
1981/11/16	50.00
1981/11/17	49.00
1981/11/18	69.60
1981/11/19	78.00
1981/11/20	61.60
1981/11/21	51.00
1981/11/22	49.00
1981/11/23	47.00
1981/11/24	46.00
1981/11/25	42.30
1981/11/26	41.40
1981/11/27	38.70
1981/11/28	34.40
1981/11/29	36.90
1981/11/30	36.00
1981/12/01	34.40
1981/12/02	33.60
1981/12/03	33.60
1981/12/04	33.60
1981/12/05	32.80
1981/12/06	32.80
1981/12/07	32.00
1981/12/08	31.20
1981/12/09	31.20
1981/12/10	31.20
1981/12/11	31.20
1981/12/12	31.20
1981/12/13	31.20
1981/12/14	31.20
1981/12/15	31.20
1981/12/16	31.20
1981/12/17	30.40
1981/12/18	28.80
1981/12/19	27.40
1981/12/20	26.20
1981/12/21	25.60
1981/12/22	25.00
1981/12/23	24.40
1981/12/24	24.40
1981/12/25	24.40
1981/12/26	24.40
1981/12/27	24.40
1981/12/28	24.40
1981/12/29	23.80
1981/12/30	23.80
1981/12/31	23.80
#===========================================
# Number of observations = 365 / 365
# Average = 124.82