1981/01/01	223.20
1981/01/02	160.00
1981/01/03	63.00
1981/01/04	55.50
1981/01/05	124.00
1981/01/06	64.00
1981/01/07	36.50
1981/01/08	88.20
1981/01/09	202.20
1981/01/10	236.80
1981/01/11	244.60
1981/01/12	224.20
1981/01/13	162.80
1981/01/14	127.20
1981/01/15	129.60
1981/01/16	154.20
1981/01/17	116.30
1981/01/18	85.00
1981/01/19	81.00
1981/01/20	79.70
1981/01/21	85.60
1981/01/22	169.40
1981/01/23	268.70
1981/01/24	172.30
1981/01/25	98.80
1981/01/26	149.50
1981/01/27	148.60
1981/01/28	90.80
1981/01/29	130.40
1981/01/30	215.90
1981/01/31	160.00
1981/02/01	200.10
1981/02/02	303.20
1981/02/03	221.10
1981/02/04	172.30
1981/02/05	166.60
1981/02/06	213.80
1981/02/07	154.20
1981/02/08	139.20
1981/02/09	166.60
1981/02/10	126.40
1981/02/11	178.00
1981/02/12	188.00
1981/02/13	213.80
1981/02/14	297.50
1981/02/15	322.80
1981/02/16	276.80
1981/02/17	121.90
1981/02/18	115.60
1981/02/19	165.70
1981/02/20	160.00
1981/02/21	162.80
1981/02/22	164.70
1981/02/23	144.70
1981/02/24	107.90
1981/02/25	210.60
1981/02/26	248.00
1981/02/27	265.30
1981/02/28	256.10
1981/03/01	207.40
1981/03/02	219.00
1981/03/03	178.00
1981/03/04	211.70
1981/03/05	197.00
1981/03/06	209.60
1981/03/07	192.00
1981/03/08	225.30
1981/03/09	231.60
1981/03/10	162.80
1981/03/11	225.30
1981/03/12	208.50
1981/03/13	219.00
1981/03/14	238.90
1981/03/15	240.00
1981/03/16	287.10
1981/03/17	213.80
1981/03/18	191.00
1981/03/19	237.90
1981/03/20	233.70
1981/03/21	224.20
1981/03/22	227.40
1981/03/23	240.00
1981/03/24	187.00
1981/03/25	222.10
1981/03/26	269.90
1981/03/27	254.90
1981/03/28	268.70
1981/03/29	257.20
1981/03/30	248.00
1981/03/31	192.00
1981/04/01	158.10
1981/04/02	167.60
1981/04/03	183.10
1981/04/04	210.30
1981/04/05	272.80
1981/04/06	259.20
1981/04/07	208.20
1981/04/08	193.50
1981/04/09	228.40
1981/04/10	305.20
1981/04/11	295.60
1981/04/12	329.20
1981/04/13	330.40
1981/04/14	260.30
1981/04/15	159.80
1981/04/16	176.40
1981/04/17	281.20
1981/04/18	264.70
1981/04/19	235.00
1981/04/20	253.70
1981/04/21	263.60
1981/04/22	261.40
1981/04/23	271.60
1981/04/24	272.80
1981/04/25	302.80
1981/04/26	363.40
1981/04/27	342.60
1981/04/28	288.40
1981/04/29	306.40
1981/04/30	359.50
1981/05/01	359.50
1981/05/02	294.40
1981/05/03	218.80
1981/05/04	241.60
1981/05/05	281.20
1981/05/06	334.00
1981/05/07	334.00
1981/05/08	358.20
1981/05/09	358.20
1981/05/10	299.20
1981/05/11	289.60
1981/05/12	193.50
1981/05/13	264.70
1981/05/14	295.60
1981/05/15	299.20
1981/05/16	311.20
1981/05/17	230.60
1981/05/18	200.20
1981/05/19	185.00
1981/05/20	162.40
1981/05/21	294.40
1981/05/22	317.20
1981/05/23	393.70
1981/05/24	635.50
1981/05/25	738.50
1981/05/26	577.30
1981/05/27	482.00
1981/05/28	465.50
1981/05/29	462.50
1981/05/30	510.50
1981/05/31	465.50
1981/06/01	432.50
1981/06/02	289.60
1981/06/03	268.00
1981/06/04	419.10
1981/06/05	452.00
1981/06/06	492.50
1981/06/07	495.50
1981/06/08	474.50
1981/06/09	347.80
1981/06/10	374.30
1981/06/11	456.50
1981/06/12	428.00
1981/06/13	404.70
1981/06/14	389.50
1981/06/15	453.50
1981/06/16	362.10
1981/06/17	294.40
1981/06/18	329.20
1981/06/19	410.40
1981/06/20	377.10
1981/06/21	323.20
1981/06/22	317.20
1981/06/23	252.60
1981/06/24	274.00
1981/06/25	287.20
1981/06/26	359.50
1981/06/27	335.20
1981/06/28	335.20
1981/06/29	331.60
1981/06/30	334.00
1981/07/01	330.40
1981/07/02	354.30
1981/07/03	276.40
1981/07/04	157.20
1981/07/05	188.70
1981/07/06	220.90
1981/07/07	135.60
1981/07/08	486.50
1981/07/09	877.40
1981/07/10	686.00
1981/07/11	486.50
1981/07/12	432.50
1981/07/13	368.80
1981/07/14	238.30
1981/07/15	254.80
1981/07/16	366.00
1981/07/17	326.80
1981/07/18	318.40
1981/07/19	240.50
1981/07/20	168.50
1981/07/21	414.70
1981/07/22	694.80
1981/07/23	853.30
1981/07/24	1010.90
1981/07/25	960.50
1981/07/26	877.40
1981/07/27	640.60
1981/07/28	428.00
1981/07/29	543.00
1981/07/30	717.50
1981/07/31	740.20
1981/08/01	745.50
1981/08/02	777.00
1981/08/03	849.60
1981/08/04	827.40
1981/08/05	842.20
1981/08/06	933.90
1981/08/07	1101.00
1981/08/08	1163.00
1981/08/09	1167.00
1981/08/10	1137.00
1981/08/11	1075.30
1981/08/12	1091.00
1981/08/13	1127.00
1981/08/14	1075.30
1981/08/15	1020.70
1981/08/16	1032.40
1981/08/17	973.90
1981/08/18	897.80
1981/08/19	763.00
1981/08/20	593.70
1981/08/21	572.40
1981/08/22	663.30
1981/08/23	749.00
1981/08/24	747.30
1981/08/25	661.50
1981/08/26	544.70
1981/08/27	485.00
1981/08/28	465.50
1981/08/29	479.00
1981/08/30	456.50
1981/08/31	422.00
1981/09/01	275.20
1981/09/02	360.80
1981/09/03	497.00
1981/09/04	603.50
1981/09/05	628.70
1981/09/06	691.30
1981/09/07	731.50
1981/09/08	733.20
1981/09/09	710.50
1981/09/10	747.30
1981/09/11	724.50
1981/09/12	764.70
1981/09/13	642.30
1981/09/14	381.20
1981/09/15	247.10
1981/09/16	302.80
1981/09/17	324.40
1981/09/18	334.00
1981/09/19	236.10
1981/09/20	211.40
1981/09/21	168.50
1981/09/22	132.10
1981/09/23	150.30
1981/09/24	290.80
1981/09/25	329.20
1981/09/26	304.00
1981/09/27	349.10
1981/09/28	239.40
1981/09/29	133.00
1981/09/30	183.10
1981/10/01	336.40
1981/10/02	360.80
1981/10/03	384.00
1981/10/04	389.50
1981/10/05	292.00
1981/10/06	118.30
1981/10/07	198.30
1981/10/08	331.60
1981/10/09	393.70
1981/10/10	431.00
1981/10/11	393.70
1981/10/12	360.80
1981/10/13	278.80
1981/10/14	208.20
1981/10/15	169.30
1981/10/16	162.40
1981/10/17	189.70
1981/10/18	236.10
1981/10/19	289.60
1981/10/20	250.40
1981/10/21	298.00
1981/10/22	311.20
1981/10/23	366.00
1981/10/24	288.40
1981/10/25	214.60
1981/10/26	162.40
1981/10/27	98.60
1981/10/28	155.50
1981/10/29	254.80
1981/10/30	307.60
1981/10/31	281.20
1981/11/01	311.20
1981/11/02	296.80
1981/11/03	254.80
1981/11/04	292.00
1981/11/05	331.60
1981/11/06	359.50
1981/11/07	371.50
1981/11/08	360.80
1981/11/09	233.90
1981/11/10	131.30
1981/11/11	120.00
1981/11/12	193.50
1981/11/13	188.70
1981/11/14	190.60
1981/11/15	249.30
1981/11/16	238.30
1981/11/17	157.20
1981/11/18	237.20
1981/11/19	290.80
1981/11/20	292.00
1981/11/21	301.60
1981/11/22	341.30
1981/11/23	355.60
1981/11/24	226.20
1981/11/25	292.00
1981/11/26	355.60
1981/11/27	364.70
1981/11/28	367.40
1981/11/29	364.70
1981/11/30	320.80
1981/12/01	247.10
1981/12/02	197.30
1981/12/03	247.10
1981/12/04	213.50
1981/12/05	206.10
1981/12/06	190.60
1981/12/07	164.10
1981/12/08	130.40
1981/12/09	155.50
1981/12/10	205.10
1981/12/11	177.30
1981/12/12	177.30
1981/12/13	226.20
1981/12/14	274.00
1981/12/15	206.10
1981/12/16	226.20
1981/12/17	242.70
1981/12/18	199.20
1981/12/19	238.30
1981/12/20	241.60
1981/12/21	257.00
1981/12/22	180.20
1981/12/23	157.20
1981/12/24	186.90
1981/12/25	146.00
1981/12/26	176.40
1981/12/27	152.90
1981/12/28	114.00
1981/12/29	130.40
1981/12/30	149.40
1981/12/31	175.40
#===========================================
# Number of observations = 365 / 365
# Average = 334.38