1981/01/01	182.40
1981/01/02	228.20
1981/01/03	167.40
1981/01/04	92.80
1981/01/05	71.20
1981/01/06	124.70
1981/01/07	90.20
1981/01/08	67.30
1981/01/09	97.40
1981/01/10	211.20
1981/01/11	247.20
1981/01/12	252.00
1981/01/13	232.00
1981/01/14	173.80
1981/01/15	146.60
1981/01/16	148.20
1981/01/17	161.80
1981/01/18	127.70
1981/01/19	100.00
1981/01/20	93.50
1981/01/21	93.50
1981/01/22	102.20
1981/01/23	176.20
1981/01/24	251.00
1981/01/25	188.70
1981/01/26	124.00
1981/01/27	159.40
1981/01/28	157.00
1981/01/29	111.20
1981/01/30	127.70
1981/01/31	174.60
1981/02/01	181.50
1981/02/02	205.80
1981/02/03	282.50
1981/02/04	229.20
1981/02/05	184.20
1981/02/06	182.40
1981/02/07	204.90
1981/02/08	174.60
1981/02/09	158.60
1981/02/10	169.00
1981/02/11	141.30
1981/02/12	178.80
1981/02/13	200.40
1981/02/14	230.10
1981/02/15	301.90
1981/02/16	324.30
1981/02/17	267.00
1981/02/18	160.20
1981/02/19	138.20
1981/02/20	171.40
1981/02/21	168.20
1981/02/22	170.60
1981/02/23	169.80
1981/02/24	149.80
1981/02/25	119.50
1981/02/26	214.00
1981/02/27	249.10
1981/02/28	265.00
1981/03/01	257.00
1981/03/02	221.50
1981/03/03	231.10
1981/03/04	237.70
1981/03/05	212.10
1981/03/06	207.60
1981/03/07	207.60
1981/03/08	212.10
1981/03/09	228.20
1981/03/10	227.30
1981/03/11	276.20
1981/03/12	233.00
1981/03/13	216.80
1981/03/14	230.10
1981/03/15	240.50
1981/03/16	255.00
1981/03/17	272.00
1981/03/18	215.90
1981/03/19	210.30
1981/03/20	239.60
1981/03/21	235.80
1981/03/22	232.00
1981/03/23	235.80
1981/03/24	233.00
1981/03/25	200.40
1981/03/26	234.80
1981/03/27	263.00
1981/03/28	260.00
1981/03/29	265.00
1981/03/30	257.00
1981/03/31	243.40
1981/04/01	233.00
1981/04/02	282.20
1981/04/03	190.30
1981/04/04	209.20
1981/04/05	249.00
1981/04/06	286.60
1981/04/07	274.00
1981/04/08	238.00
1981/04/09	227.00
1981/04/10	276.00
1981/04/11	320.20
1981/04/12	332.20
1981/04/13	350.20
1981/04/14	345.40
1981/04/15	278.00
1981/04/16	201.10
1981/04/17	212.80
1981/04/18	298.70
1981/04/19	295.40
1981/04/20	266.00
1981/04/21	286.60
1981/04/22	287.70
1981/04/23	297.60
1981/04/24	307.50
1981/04/25	309.70
1981/04/26	343.00
1981/04/27	382.60
1981/04/28	363.40
1981/04/29	326.20
1981/04/30	341.80
1981/05/01	382.60
1981/05/02	375.40
1981/05/03	313.00
1981/05/04	264.00
1981/05/05	286.60
1981/05/06	321.40
1981/05/07	367.00
1981/05/08	370.60
1981/05/09	395.40
1981/05/10	371.80
1981/05/11	352.60
1981/05/12	278.00
1981/05/13	239.00
1981/05/14	299.80
1981/05/15	315.40
1981/05/16	347.80
1981/05/17	329.80
1981/05/18	279.00
1981/05/19	242.00
1981/05/20	216.40
1981/05/21	172.60
1981/05/22	321.40
1981/05/23	368.20
1981/05/24	488.80
1981/05/25	695.40
1981/05/26	711.40
1981/05/27	593.00
1981/05/28	511.20
1981/05/29	501.40
1981/05/30	518.20
1981/05/31	531.50
1981/06/01	501.40
1981/06/02	449.30
1981/06/03	320.20
1981/06/04	335.80
1981/06/05	439.80
1981/06/06	376.60
1981/06/07	518.20
1981/06/08	533.00
1981/06/09	486.00
1981/06/10	407.40
1981/06/11	460.10
1981/06/12	501.40
1981/06/13	456.10
1981/06/14	441.20
1981/06/15	450.60
1981/06/16	477.60
1981/06/17	391.50
1981/06/18	345.40
1981/06/19	388.90
1981/06/20	435.80
1981/06/21	410.20
1981/06/22	373.00
1981/06/23	353.80
1981/06/24	307.50
1981/06/25	343.00
1981/06/26	367.00
1981/06/27	411.50
1981/06/28	423.70
1981/06/29	422.30
1981/06/30	419.60
1981/07/01	407.40
1981/07/02	399.40
1981/07/03	395.40
1981/07/04	310.80
1981/07/05	215.50
1981/07/06	252.00
1981/07/07	250.00
1981/07/08	265.00
1981/07/09	735.40
1981/07/10	855.00
1981/07/11	722.60
1981/07/12	587.00
1981/07/13	537.50
1981/07/14	439.80
1981/07/15	325.00
1981/07/16	356.20
1981/07/17	415.50
1981/07/18	398.00
1981/07/19	376.60
1981/07/20	307.50
1981/07/21	292.10
1981/07/22	572.00
1981/07/23	777.00
1981/07/24	949.30
1981/07/25	1045.00
1981/07/26	1017.00
1981/07/27	939.10
1981/07/28	703.40
1981/07/29	596.00
1981/07/30	655.40
1981/07/31	838.40
1981/08/01	879.70
1981/08/02	901.70
1981/08/03	957.80
1981/08/04	1001.30
1981/08/05	1029.30
1981/08/06	1073.00
1981/08/07	1179.20
1981/08/08	1263.80
1981/08/09	1283.60
1981/08/10	1303.40
1981/08/11	1289.00
1981/08/12	1262.00
1981/08/13	1271.00
1981/08/14	1274.60
1981/08/15	1267.40
1981/08/16	1265.60
1981/08/17	1254.80
1981/08/18	1224.20
1981/08/19	1188.20
1981/08/20	1163.00
1981/08/21	1087.40
1981/08/22	1048.50
1981/08/23	1029.30
1981/08/24	1052.00
1981/08/25	1015.20
1981/08/26	917.00
1981/08/27	826.90
1981/08/28	709.80
1981/08/29	626.00
1981/08/30	591.50
1981/08/31	579.50
1981/09/01	561.50
1981/09/02	531.50
1981/09/03	549.50
1981/09/04	632.00
1981/09/05	745.00
1981/09/06	796.20
1981/09/07	853.30
1981/09/08	896.60
1981/09/09	874.80
1981/09/10	878.10
1981/09/11	871.50
1981/09/12	883.00
1981/09/13	878.10
1981/09/14	730.60
1981/09/15	546.50
1981/09/16	410.20
1981/09/17	446.60
1981/09/18	473.60
1981/09/19	449.30
1981/09/20	343.00
1981/09/21	322.60
1981/09/22	272.00
1981/09/23	227.00
1981/09/24	256.00
1981/09/25	376.60
1981/09/26	434.50
1981/09/27	426.30
1981/09/28	437.10
1981/09/29	429.00
1981/09/30	422.30
1981/10/01	370.60
1981/10/02	387.60
1981/10/03	445.30
1981/10/04	465.50
1981/10/05	474.90
1981/10/06	320.20
1981/10/07	230.00
1981/10/08	299.80
1981/10/09	338.20
1981/10/10	362.20
1981/10/11	394.10
1981/10/12	392.80
1981/10/13	473.60
1981/10/14	411.50
1981/10/15	306.40
1981/10/16	262.00
1981/10/17	247.00
1981/10/18	276.00
1981/10/19	323.80
1981/10/20	374.20
1981/10/21	320.20
1981/10/22	350.20
1981/10/23	379.00
1981/10/24	416.90
1981/10/25	377.80
1981/10/26	305.30
1981/10/27	236.00
1981/10/28	210.10
1981/10/29	263.00
1981/10/30	316.60
1981/10/31	344.20
1981/11/01	329.80
1981/11/02	341.80
1981/11/03	331.00
1981/11/04	321.40
1981/11/05	345.40
1981/11/06	390.20
1981/11/07	443.90
1981/11/08	376.60
1981/11/09	344.20
1981/11/10	280.00
1981/11/11	179.50
1981/11/12	168.60
1981/11/13	231.00
1981/11/14	265.00
1981/11/15	281.10
1981/11/16	315.40
1981/11/17	309.70
1981/11/18	270.00
1981/11/19	317.80
1981/11/20	337.00
1981/11/21	383.80
1981/11/22	382.60
1981/11/23	382.60
1981/11/24	382.60
1981/11/25	383.80
1981/11/26	385.00
1981/11/27	395.40
1981/11/28	410.20
1981/11/29	377.80
1981/11/30	321.40
1981/12/01	346.60
1981/12/02	321.40
1981/12/03	374.20
1981/12/04	406.10
1981/12/05	376.60
1981/12/06	333.40
1981/12/07	289.90
1981/12/08	258.00
1981/12/09	249.00
1981/12/10	247.00
1981/12/11	250.00
1981/12/12	244.00
1981/12/13	234.00
1981/12/14	253.00
1981/12/15	283.30
1981/12/16	272.00
1981/12/17	287.70
1981/12/18	273.00
1981/12/19	257.00
1981/12/20	275.00
1981/12/21	283.30
1981/12/22	284.40
1981/12/23	216.40
1981/12/24	202.90
1981/12/25	210.10
1981/12/26	190.30
1981/12/27	210.10
1981/12/28	184.00
1981/12/29	154.20
1981/12/30	155.80
1981/12/31	188.50
#===========================================
# Number of observations = 365 / 365
# Average = 399.90