1981/01/01	168.70
1981/01/02	233.00
1981/01/03	221.00
1981/01/04	148.00
1981/01/05	115.70
1981/01/06	131.00
1981/01/07	142.90
1981/01/08	107.60
1981/01/09	123.40
1981/01/10	192.10
1981/01/11	247.00
1981/01/12	266.30
1981/01/13	259.00
1981/01/14	219.00
1981/01/15	175.00
1981/01/16	160.60
1981/01/17	175.00
1981/01/18	166.00
1981/01/19	129.30
1981/01/20	103.80
1981/01/21	93.30
1981/01/22	97.00
1981/01/23	160.60
1981/01/24	250.00
1981/01/25	231.00
1981/01/26	158.80
1981/01/27	158.80
1981/01/28	181.30
1981/01/29	144.60
1981/01/30	140.40
1981/01/31	210.10
1981/02/01	207.40
1981/02/02	210.10
1981/02/03	279.90
1981/02/04	265.20
1981/02/05	212.00
1981/02/06	195.70
1981/02/07	221.00
1981/02/08	202.00
1981/02/09	172.30
1981/02/10	184.00
1981/02/11	167.80
1981/02/12	182.20
1981/02/13	205.60
1981/02/14	226.00
1981/02/15	282.00
1981/02/16	326.00
1981/02/17	302.90
1981/02/18	207.40
1981/02/19	146.30
1981/02/20	173.20
1981/02/21	187.60
1981/02/22	187.60
1981/02/23	187.60
1981/02/24	179.50
1981/02/25	146.30
1981/02/26	189.40
1981/02/27	251.00
1981/02/28	273.60
1981/03/01	274.70
1981/03/02	249.00
1981/03/03	240.00
1981/03/04	224.00
1981/03/05	223.00
1981/03/06	226.00
1981/03/07	228.00
1981/03/08	221.00
1981/03/09	239.00
1981/03/10	249.00
1981/03/11	215.00
1981/03/12	230.00
1981/03/13	239.00
1981/03/14	236.00
1981/03/15	251.00
1981/03/16	258.00
1981/03/17	284.20
1981/03/18	260.00
1981/03/19	224.00
1981/03/20	246.00
1981/03/21	256.00
1981/03/22	250.00
1981/03/23	250.00
1981/03/24	257.00
1981/03/25	232.00
1981/03/26	230.00
1981/03/27	269.40
1981/03/28	279.90
1981/03/29	273.60
1981/03/30	282.00
1981/03/31	273.60
1981/04/01	243.00
1981/04/02	202.00
1981/04/03	184.00
1981/04/04	203.00
1981/04/05	218.00
1981/04/06	264.00
1981/04/07	275.00
1981/04/08	247.00
1981/04/09	223.00
1981/04/10	235.00
1981/04/11	294.00
1981/04/12	304.00
1981/04/13	329.00
1981/04/14	336.00
1981/04/15	301.00
1981/04/16	233.00
1981/04/17	203.00
1981/04/18	260.00
1981/04/19	284.00
1981/04/20	266.00
1981/04/21	264.00
1981/04/22	279.00
1981/04/23	281.00
1981/04/24	294.00
1981/04/25	300.00
1981/04/26	313.00
1981/04/27	354.00
1981/04/28	357.00
1981/04/29	326.00
1981/04/30	317.00
1981/05/01	356.00
1981/05/02	367.00
1981/05/03	330.00
1981/05/04	271.00
1981/05/05	264.00
1981/05/06	296.00
1981/05/07	336.00
1981/05/08	354.00
1981/05/09	362.00
1981/05/10	367.00
1981/05/11	345.00
1981/05/12	318.00
1981/05/13	253.00
1981/05/14	266.00
1981/05/15	304.00
1981/05/16	314.00
1981/05/17	332.00
1981/05/18	286.00
1981/05/19	250.00
1981/05/20	225.00
1981/05/21	207.00
1981/05/22	289.00
1981/05/23	338.00
1981/05/24	401.00
1981/05/25	576.00
1981/05/26	655.00
1981/05/27	585.00
1981/05/28	515.00
1981/05/29	484.00
1981/05/30	482.00
1981/05/31	507.00
1981/06/01	494.00
1981/06/02	459.00
1981/06/03	362.00
1981/06/04	314.00
1981/06/05	404.00
1981/06/06	459.00
1981/06/07	497.00
1981/06/08	505.00
1981/06/09	482.00
1981/06/10	417.00
1981/06/11	414.00
1981/06/12	462.00
1981/06/13	439.00
1981/06/14	423.00
1981/06/15	422.00
1981/06/16	446.00
1981/06/17	406.00
1981/06/18	349.00
1981/06/19	357.00
1981/06/20	408.00
1981/06/21	404.00
1981/06/22	368.00
1981/06/23	354.00
1981/06/24	321.00
1981/06/25	323.00
1981/06/26	349.00
1981/06/27	387.00
1981/06/28	409.00
1981/06/29	412.00
1981/06/30	412.00
1981/07/01	401.00
1981/07/02	396.00
1981/07/03	397.00
1981/07/04	349.00
1981/07/05	257.00
1981/07/06	231.00
1981/07/07	268.00
1981/07/08	248.00
1981/07/09	556.00
1981/07/10	787.00
1981/07/11	721.00
1981/07/12	607.00
1981/07/13	542.00
1981/07/14	473.00
1981/07/15	372.00
1981/07/16	343.00
1981/07/17	416.00
1981/07/18	431.00
1981/07/19	408.00
1981/07/20	361.00
1981/07/21	301.00
1981/07/22	464.00
1981/07/23	671.00
1981/07/24	857.00
1981/07/25	967.00
1981/07/26	960.00
1981/07/27	909.00
1981/07/28	758.00
1981/07/29	650.00
1981/07/30	685.00
1981/07/31	799.00
1981/08/01	855.00
1981/08/02	889.00
1981/08/03	938.00
1981/08/04	995.00
1981/08/05	1066.00
1981/08/06	1111.00
1981/08/07	1194.00
1981/08/08	1292.00
1981/08/09	1353.00
1981/08/10	1388.00
1981/08/11	1384.00
1981/08/12	1364.00
1981/08/13	1388.00
1981/08/14	1395.00
1981/08/15	1364.00
1981/08/16	1360.00
1981/08/17	1350.00
1981/08/18	1314.00
1981/08/19	1258.00
1981/08/20	1171.00
1981/08/21	1087.00
1981/08/22	1034.00
1981/08/23	1056.00
1981/08/24	1070.00
1981/08/25	1009.00
1981/08/26	942.00
1981/08/27	843.00
1981/08/28	749.00
1981/08/29	674.00
1981/08/30	646.00
1981/08/31	618.00
1981/09/01	583.00
1981/09/02	498.00
1981/09/03	514.00
1981/09/04	621.00
1981/09/05	709.00
1981/09/06	760.00
1981/09/07	811.00
1981/09/08	862.00
1981/09/09	862.00
1981/09/10	857.00
1981/09/11	860.00
1981/09/12	857.00
1981/09/13	864.00
1981/09/14	770.00
1981/09/15	603.00
1981/09/16	468.00
1981/09/17	450.00
1981/09/18	467.00
1981/09/19	459.00
1981/09/20	398.00
1981/09/21	349.00
1981/09/22	312.00
1981/09/23	268.00
1981/09/24	259.00
1981/09/25	355.00
1981/09/26	414.00
1981/09/27	421.00
1981/09/28	441.00
1981/09/29	383.00
1981/09/30	290.00
1981/10/01	277.00
1981/10/02	381.00
1981/10/03	458.00
1981/10/04	458.00
1981/10/05	463.00
1981/10/06	404.00
1981/10/07	282.00
1981/10/08	277.00
1981/10/09	384.00
1981/10/10	456.00
1981/10/11	495.00
1981/10/12	493.00
1981/10/13	467.00
1981/10/14	406.00
1981/10/15	332.00
1981/10/16	283.00
1981/10/17	256.00
1981/10/18	266.00
1981/10/19	311.00
1981/10/20	355.00
1981/10/21	355.00
1981/10/22	365.00
1981/10/23	386.00
1981/10/24	419.00
1981/10/25	384.00
1981/10/26	322.00
1981/10/27	267.00
1981/10/28	215.00
1981/10/29	205.00
1981/10/30	280.00
1981/10/31	342.00
1981/11/01	351.00
1981/11/02	359.00
1981/11/03	360.00
1981/11/04	333.00
1981/11/05	344.00
1981/11/06	387.00
1981/11/07	421.00
1981/11/08	438.00
1981/11/09	426.00
1981/11/10	345.00
1981/11/11	247.00
1981/11/12	212.00
1981/11/13	263.00
1981/11/14	287.00
1981/11/15	277.00
1981/11/16	307.00
1981/11/17	319.00
1981/11/18	280.00
1981/11/19	297.00
1981/11/20	362.00
1981/11/21	408.00
1981/11/22	428.00
1981/11/23	465.00
1981/11/24	501.00
1981/11/25	452.00
1981/11/26	454.00
1981/11/27	507.00
1981/11/28	523.00
1981/11/29	510.00
1981/11/30	494.00
1981/12/01	465.00
1981/12/02	424.00
1981/12/03	408.00
1981/12/04	421.00
1981/12/05	392.00
1981/12/06	347.00
1981/12/07	305.00
1981/12/08	272.00
1981/12/09	262.00
1981/12/10	261.00
1981/12/11	263.00
1981/12/12	256.00
1981/12/13	243.00
1981/12/14	266.00
1981/12/15	306.00
1981/12/16	317.00
1981/12/17	292.00
1981/12/18	284.00
1981/12/19	256.00
1981/12/20	279.00
1981/12/21	288.00
1981/12/22	291.00
1981/12/23	253.00
1981/12/24	208.00
1981/12/25	220.00
1981/12/26	204.00
1981/12/27	209.00
1981/12/28	203.00
1981/12/29	164.00
1981/12/30	162.00
1981/12/31	200.00
#===========================================
# Number of observations = 365 / 365
# Average = 408.94