1981/01/01	173.40
1981/01/02	244.00
1981/01/03	260.00
1981/01/04	198.30
1981/01/05	128.20
1981/01/06	120.20
1981/01/07	159.00
1981/01/08	119.40
1981/01/09	89.80
1981/01/10	170.70
1981/01/11	259.00
1981/01/12	288.00
1981/01/13	288.00
1981/01/14	259.00
1981/01/15	210.70
1981/01/16	186.90
1981/01/17	191.70
1981/01/18	195.50
1981/01/19	160.80
1981/01/20	132.20
1981/01/21	125.80
1981/01/22	121.80
1981/01/23	147.50
1981/01/24	265.00
1981/01/25	272.00
1981/01/26	197.40
1981/01/27	166.20
1981/01/28	200.20
1981/01/29	177.00
1981/01/30	146.60
1981/01/31	205.90
1981/02/01	229.00
1981/02/02	221.10
1981/02/03	286.00
1981/02/04	300.30
1981/02/05	254.00
1981/02/06	218.30
1981/02/07	236.00
1981/02/08	235.00
1981/02/09	197.40
1981/02/10	201.20
1981/02/11	202.20
1981/02/12	199.30
1981/02/13	225.00
1981/02/14	244.00
1981/02/15	302.40
1981/02/16	377.10
1981/02/17	376.50
1981/02/18	283.00
1981/02/19	185.10
1981/02/20	190.70
1981/02/21	205.00
1981/02/22	205.90
1981/02/23	205.90
1981/02/24	205.00
1981/02/25	182.40
1981/02/26	205.00
1981/02/27	271.00
1981/02/28	292.00
1981/03/01	297.20
1981/03/02	275.00
1981/03/03	259.00
1981/03/04	249.00
1981/03/05	235.00
1981/03/06	246.00
1981/03/07	247.00
1981/03/08	241.00
1981/03/09	252.00
1981/03/10	267.00
1981/03/11	243.00
1981/03/12	237.00
1981/03/13	259.00
1981/03/14	253.00
1981/03/15	268.00
1981/03/16	275.00
1981/03/17	296.10
1981/03/18	291.00
1981/03/19	247.00
1981/03/20	255.00
1981/03/21	272.00
1981/03/22	268.00
1981/03/23	267.00
1981/03/24	272.00
1981/03/25	258.00
1981/03/26	242.00
1981/03/27	277.00
1981/03/28	295.10
1981/03/29	296.10
1981/03/30	298.20
1981/03/31	289.00
1981/04/01	270.00
1981/04/02	229.00
1981/04/03	203.10
1981/04/04	212.60
1981/04/05	226.00
1981/04/06	268.00
1981/04/07	292.00
1981/04/08	274.00
1981/04/09	243.00
1981/04/10	238.00
1981/04/11	295.10
1981/04/12	311.80
1981/04/13	338.10
1981/04/14	349.20
1981/04/15	329.30
1981/04/16	265.00
1981/04/17	203.10
1981/04/18	252.00
1981/04/19	297.20
1981/04/20	286.00
1981/04/21	277.00
1981/04/22	290.00
1981/04/23	292.00
1981/04/24	304.50
1981/04/25	312.90
1981/04/26	318.30
1981/04/27	357.60
1981/04/28	372.00
1981/04/29	343.60
1981/04/30	324.90
1981/05/01	356.40
1981/05/02	379.20
1981/05/03	356.40
1981/05/04	300.30
1981/05/05	269.00
1981/05/06	301.30
1981/05/07	337.00
1981/05/08	367.20
1981/05/09	370.80
1981/05/10	385.20
1981/05/11	364.80
1981/05/12	343.60
1981/05/13	285.00
1981/05/14	269.00
1981/05/15	309.70
1981/05/16	319.40
1981/05/17	348.00
1981/05/18	312.90
1981/05/19	274.00
1981/05/20	245.00
1981/05/21	221.10
1981/05/22	271.00
1981/05/23	339.20
1981/05/24	385.20
1981/05/25	553.20
1981/05/26	678.00
1981/05/27	634.80
1981/05/28	559.90
1981/05/29	529.70
1981/05/30	528.60
1981/05/31	549.80
1981/06/01	547.60
1981/06/02	525.80
1981/06/03	420.70
1981/06/04	352.80
1981/06/05	416.80
1981/06/06	487.60
1981/06/07	536.40
1981/06/08	554.30
1981/06/09	544.20
1981/06/10	482.40
1981/06/11	449.80
1981/06/12	506.70
1981/06/13	496.30
1981/06/14	467.40
1981/06/15	463.30
1981/06/16	487.60
1981/06/17	471.40
1981/06/18	402.80
1981/06/19	386.50
1981/06/20	436.40
1981/06/21	447.20
1981/06/22	414.20
1981/06/23	391.50
1981/06/24	368.40
1981/06/25	342.50
1981/06/26	375.60
1981/06/27	406.50
1981/06/28	437.70
1981/06/29	443.10
1981/06/30	445.80
1981/07/01	435.00
1981/07/02	428.50
1981/07/03	429.80
1981/07/04	402.80
1981/07/05	315.00
1981/07/06	257.00
1981/07/07	293.00
1981/07/08	268.00
1981/07/09	477.20
1981/07/10	799.60
1981/07/11	784.80
1981/07/12	670.00
1981/07/13	591.00
1981/07/14	538.70
1981/07/15	435.00
1981/07/16	369.60
1981/07/17	433.70
1981/07/18	468.80
1981/07/19	451.20
1981/07/20	420.70
1981/07/21	350.40
1981/07/22	433.70
1981/07/23	676.40
1981/07/24	869.00
1981/07/25	1033.10
1981/07/26	1040.00
1981/07/27	998.60
1981/07/28	869.00
1981/07/29	734.40
1981/07/30	730.80
1981/07/31	816.70
1981/08/01	925.80
1981/08/02	967.80
1981/08/03	1012.40
1981/08/04	1084.60
1981/08/05	1161.00
1981/08/06	1205.20
1981/08/07	1278.50
1981/08/08	1362.20
1981/08/09	1418.40
1981/08/10	1450.30
1981/08/11	1456.10
1981/08/12	1447.40
1981/08/13	1456.10
1981/08/14	1467.70
1981/08/15	1453.20
1981/08/16	1444.50
1981/08/17	1444.50
1981/08/18	1356.00
1981/08/19	1293.00
1981/08/20	1214.80
1981/08/21	1138.20
1981/08/22	1071.70
1981/08/23	1085.90
1981/08/24	1103.70
1981/08/25	1033.00
1981/08/26	937.90
1981/08/27	823.20
1981/08/28	720.20
1981/08/29	640.60
1981/08/30	608.00
1981/08/31	585.50
1981/09/01	561.50
1981/09/02	493.70
1981/09/03	482.00
1981/09/04	561.50
1981/09/05	649.10
1981/09/06	697.00
1981/09/07	753.80
1981/09/08	808.80
1981/09/09	825.60
1981/09/10	811.20
1981/09/11	823.20
1981/09/12	813.60
1981/09/13	828.00
1981/09/14	751.70
1981/09/15	597.50
1981/09/16	470.30
1981/09/17	432.30
1981/09/18	440.00
1981/09/19	436.70
1981/09/20	402.00
1981/09/21	362.90
1981/09/22	341.00
1981/09/23	313.80
1981/09/24	304.70
1981/09/25	337.20
1981/09/26	383.50
1981/09/27	392.00
1981/09/28	408.00
1981/09/29	384.50
1981/09/30	327.50
1981/10/01	300.50
1981/10/02	342.60
1981/10/03	390.10
1981/10/04	407.00
1981/10/05	415.10
1981/10/06	503.10
1981/10/07	318.30
1981/10/08	286.50
1981/10/09	333.50
1981/10/10	386.30
1981/10/11	419.30
1981/10/12	423.50
1981/10/13	409.00
1981/10/14	375.00
1981/10/15	328.30
1981/10/16	297.50
1981/10/17	280.00
1981/10/18	278.50
1981/10/19	296.90
1981/10/20	321.80
1981/10/21	331.20
1981/10/22	332.70
1981/10/23	346.60
1981/10/24	368.00
1981/10/25	357.80
1981/10/26	338.00
1981/10/27	293.40
1981/10/28	267.20
1981/10/29	0
1981/10/30	277.60
1981/10/31	312.50
1981/11/01	322.50
1981/11/02	328.30
1981/11/03	331.20
1981/11/04	318.30
1981/11/05	317.00
1981/11/06	338.70
1981/11/07	364.60
1981/11/08	381.60
1981/11/09	381.60
1981/11/10	353.80
1981/11/11	308.30
1981/11/12	282.50
1981/11/13	290.10
1981/11/14	304.70
1981/11/15	293.90
1981/11/16	301.70
1981/11/17	317.00
1981/11/18	305.30
1981/11/19	302.30
1981/11/20	346.60
1981/11/21	383.50
1981/11/22	400.00
1981/11/23	424.60
1981/11/24	459.40
1981/11/25	436.70
1981/11/26	420.30
1981/11/27	454.70
1981/11/28	471.60
1981/11/29	463.00
1981/11/30	450.10
1981/12/01	437.80
1981/12/02	424.60
1981/12/03	393.00
1981/12/04	398.00
1981/12/05	369.80
1981/12/06	332.00
1981/12/07	312.50
1981/12/08	298.10
1981/12/09	275.00
1981/12/10	264.40
1981/12/11	303.40
1981/12/12	309.70
1981/12/13	291.00
1981/12/14	300.30
1981/12/15	342.50
1981/12/16	335.90
1981/12/17	316.10
1981/12/18	328.20
1981/12/19	305.60
1981/12/20	310.80
1981/12/21	316.10
1981/12/22	323.80
1981/12/23	304.50
1981/12/24	252.00
1981/12/25	255.00
1981/12/26	239.00
1981/12/27	233.00
1981/12/28	241.00
1981/12/29	210.70
1981/12/30	246.00
1981/12/31	186.90
#===========================================
# Number of observations = 365 / 365
# Average = 424.56