1981/01/01	107.30
1981/01/02	84.20
1981/01/03	90.80
1981/01/04	140.20
1981/01/05	112.80
1981/01/06	122.20
1981/01/07	239.40
1981/01/08	386.80
1981/01/09	417.20
1981/01/10	394.40
1981/01/11	354.50
1981/01/12	278.40
1981/01/13	225.00
1981/01/14	292.00
1981/01/15	328.80
1981/01/16	354.50
1981/01/17	216.00
1981/01/18	225.00
1981/01/19	263.10
1981/01/20	271.60
1981/01/21	346.90
1981/01/22	325.20
1981/01/23	254.60
1981/01/24	266.50
1981/01/25	354.50
1981/01/26	319.80
1981/01/27	241.00
1981/01/28	341.40
1981/01/29	394.40
1981/01/30	350.70
1981/01/31	379.20
1981/02/01	463.00
1981/02/02	413.40
1981/02/03	367.80
1981/02/04	350.70
1981/02/05	403.90
1981/02/06	365.90
1981/02/07	356.40
1981/02/08	381.10
1981/02/09	327.00
1981/02/10	367.80
1981/02/11	381.10
1981/02/12	403.90
1981/02/13	467.00
1981/02/14	501.00
1981/02/15	463.00
1981/02/16	310.80
1981/02/17	283.50
1981/02/18	354.50
1981/02/19	358.30
1981/02/20	362.10
1981/02/21	364.00
1981/02/22	330.60
1981/02/23	302.20
1981/02/24	383.00
1981/02/25	403.90
1981/02/26	419.10
1981/02/27	429.00
1981/02/28	394.40
1981/03/01	413.40
1981/03/02	371.60
1981/03/03	386.80
1981/03/04	373.50
1981/03/05	398.20
1981/03/06	423.00
1981/03/07	463.00
1981/03/08	449.00
1981/03/09	390.60
1981/03/10	429.00
1981/03/11	407.70
1981/03/12	411.50
1981/03/13	431.00
1981/03/14	425.00
1981/03/15	477.00
1981/03/16	415.30
1981/03/17	383.00
1981/03/18	441.00
1981/03/19	425.00
1981/03/20	411.50
1981/03/21	417.20
1981/03/22	437.00
1981/03/23	394.40
1981/03/24	407.70
1981/03/25	455.00
1981/03/26	447.00
1981/03/27	455.00
1981/03/28	445.00
1981/03/29	443.00
1981/03/30	398.20
1981/03/31	360.20
1981/04/01	377.30
1981/04/02	381.10
1981/04/03	415.30
1981/04/04	463.00
1981/04/05	449.00
1981/04/06	405.80
1981/04/07	390.60
1981/04/08	433.00
1981/04/09	483.00
1981/04/10	445.00
1981/04/11	457.00
1981/04/12	465.00
1981/04/13	394.40
1981/04/14	298.80
1981/04/15	288.60
1981/04/16	407.70
1981/04/17	383.00
1981/04/18	383.00
1981/04/19	415.30
1981/04/20	441.00
1981/04/21	445.00
1981/04/22	463.00
1981/04/23	469.00
1981/04/24	485.00
1981/04/25	517.00
1981/04/26	505.00
1981/04/27	463.00
1981/04/28	467.00
1981/04/29	517.00
1981/04/30	525.20
1981/05/01	471.00
1981/05/02	396.30
1981/05/03	429.00
1981/05/04	455.00
1981/05/05	463.00
1981/05/06	479.00
1981/05/07	495.00
1981/05/08	501.00
1981/05/09	467.00
1981/05/10	457.00
1981/05/11	346.90
1981/05/12	398.20
1981/05/13	437.00
1981/05/14	447.00
1981/05/15	479.00
1981/05/16	398.20
1981/05/17	373.50
1981/05/18	302.20
1981/05/19	236.20
1981/05/20	390.60
1981/05/21	413.40
1981/05/22	481.00
1981/05/23	642.80
1981/05/24	787.80
1981/05/25	660.20
1981/05/26	554.60
1981/05/27	581.90
1981/05/28	558.80
1981/05/29	594.50
1981/05/30	546.20
1981/05/31	529.40
1981/06/01	411.50
1981/06/02	388.70
1981/06/03	544.10
1981/06/04	535.70
1981/06/05	577.70
1981/06/06	560.90
1981/06/07	586.10
1981/06/08	483.00
1981/06/09	501.00
1981/06/10	563.00
1981/06/11	503.00
1981/06/12	493.00
1981/06/13	497.00
1981/06/14	579.80
1981/06/15	481.00
1981/06/16	441.00
1981/06/17	459.00
1981/06/18	554.60
1981/06/19	517.00
1981/06/20	471.00
1981/06/21	449.00
1981/06/22	348.80
1981/06/23	365.90
1981/06/24	400.10
1981/06/25	439.00
1981/06/26	433.00
1981/06/27	437.00
1981/06/28	419.10
1981/06/29	425.00
1981/06/30	449.00
1981/07/01	507.00
1981/07/02	392.50
1981/07/03	258.00
1981/07/04	341.40
1981/07/05	327.00
1981/07/06	210.00
1981/07/07	290.30
1981/07/08	560.90
1981/07/09	563.00
1981/07/10	447.00
1981/07/11	400.10
1981/07/12	336.00
1981/07/13	225.00
1981/07/14	305.60
1981/07/15	467.00
1981/07/16	421.00
1981/07/17	413.40
1981/07/18	336.00
1981/07/19	237.80
1981/07/20	392.50
1981/07/21	548.30
1981/07/22	577.70
1981/07/23	830.90
1981/07/24	863.80
1981/07/25	772.40
1981/07/26	521.00
1981/07/27	367.80
1981/07/28	411.50
1981/07/29	619.70
1981/07/30	531.50
1981/07/31	644.90
1981/08/01	695.40
1981/08/02	765.80
1981/08/03	730.60
1981/08/04	730.60
1981/08/05	812.50
1981/08/06	952.60
1981/08/07	1029.40
1981/08/08	979.00
1981/08/09	933.40
1981/08/10	859.00
1981/08/11	866.20
1981/08/12	974.20
1981/08/13	902.20
1981/08/14	814.80
1981/08/15	849.40
1981/08/16	819.40
1981/08/17	796.60
1981/08/18	735.00
1981/08/19	611.30
1981/08/20	607.10
1981/08/21	642.80
1981/08/22	754.80
1981/08/23	770.20
1981/08/24	704.20
1981/08/25	636.50
1981/08/26	563.00
1981/08/27	563.00
1981/08/28	558.80
1981/08/29	567.20
1981/08/30	567.20
1981/08/31	411.50
1981/09/01	362.10
1981/09/02	515.00
1981/09/03	556.70
1981/09/04	558.80
1981/09/05	600.80
1981/09/06	613.40
1981/09/07	613.40
1981/09/08	569.30
1981/09/09	605.00
1981/09/10	579.80
1981/09/11	662.40
1981/09/12	623.90
1981/09/13	337.80
1981/09/14	180.00
1981/09/15	293.70
1981/09/16	377.30
1981/09/17	321.60
1981/09/18	336.00
1981/09/19	310.80
1981/09/20	275.00
1981/09/21	216.00
1981/09/22	252.90
1981/09/23	423.00
1981/09/24	415.30
1981/09/25	390.60
1981/09/26	461.00
1981/09/27	314.40
1981/09/28	165.00
1981/09/29	231.40
1981/09/30	441.00
1981/10/01	469.00
1981/10/02	495.00
1981/10/03	507.00
1981/10/04	348.80
1981/10/05	155.20
1981/10/06	276.70
1981/10/07	423.00
1981/10/08	459.00
1981/10/09	489.00
1981/10/10	443.00
1981/10/11	427.00
1981/10/12	346.90
1981/10/13	244.40
1981/10/14	233.00
1981/10/15	241.00
1981/10/16	280.10
1981/10/17	302.20
1981/10/18	334.20
1981/10/19	332.40
1981/10/20	392.50
1981/10/21	411.50
1981/10/22	469.00
1981/10/23	419.10
1981/10/24	358.30
1981/10/25	309.00
1981/10/26	244.40
1981/10/27	278.40
1981/10/28	377.30
1981/10/29	435.00
1981/10/30	415.30
1981/10/31	455.00
1981/11/01	447.00
1981/11/02	411.50
1981/11/03	427.00
1981/11/04	467.00
1981/11/05	477.00
1981/11/06	485.00
1981/11/07	471.00
1981/11/08	356.40
1981/11/09	228.20
1981/11/10	254.60
1981/11/11	379.20
1981/11/12	345.00
1981/11/13	343.20
1981/11/14	417.20
1981/11/15	425.00
1981/11/16	407.70
1981/11/17	421.00
1981/11/18	465.00
1981/11/19	447.00
1981/11/20	439.00
1981/11/21	491.00
1981/11/22	515.00
1981/11/23	449.00
1981/11/24	479.00
1981/11/25	509.00
1981/11/26	513.00
1981/11/27	507.00
1981/11/28	515.00
1981/11/29	501.00
1981/11/30	386.80
1981/12/01	330.60
1981/12/02	407.70
1981/12/03	316.20
1981/12/04	303.90
1981/12/05	303.90
1981/12/06	298.80
1981/12/07	247.80
1981/12/08	269.90
1981/12/09	310.80
1981/12/10	286.90
1981/12/11	307.30
1981/12/12	334.20
1981/12/13	403.90
1981/12/14	328.80
1981/12/15	292.00
1981/12/16	318.00
1981/12/17	318.00
1981/12/18	379.20
1981/12/19	383.00
1981/12/20	403.90
1981/12/21	295.40
1981/12/22	297.10
1981/12/23	327.00
1981/12/24	278.40
1981/12/25	297.10
1981/12/26	252.90
1981/12/27	251.20
1981/12/28	273.30
1981/12/29	268.20
1981/12/30	312.60
1981/12/31	334.20
#===========================================
# Number of observations = 365 / 365
# Average = 433.71