1981/01/01	56.70
1981/01/02	52.40
1981/01/03	51.60
1981/01/04	69.80
1981/01/05	65.50
1981/01/06	86.00
1981/01/07	143.00
1981/01/08	164.00
1981/01/09	182.00
1981/01/10	155.00
1981/01/11	155.00
1981/01/12	71.30
1981/01/13	110.00
1981/01/14	107.00
1981/01/15	77.10
1981/01/16	60.40
1981/01/17	63.30
1981/01/18	69.80
1981/01/19	60.40
1981/01/20	71.30
1981/01/21	80.00
1981/01/22	89.00
1981/01/23	137.00
1981/01/24	140.00
1981/01/25	134.00
1981/01/26	64.70
1981/01/27	101.00
1981/01/28	146.00
1981/01/29	146.00
1981/01/30	161.00
1981/01/31	214.00
1981/02/01	314.00
1981/02/02	158.00
1981/02/03	152.00
1981/02/04	149.00
1981/02/05	155.00
1981/02/06	119.00
1981/02/07	158.00
1981/02/08	152.00
1981/02/09	137.00
1981/02/10	230.00
1981/02/11	170.00
1981/02/12	218.00
1981/02/13	306.00
1981/02/14	262.00
1981/02/15	182.00
1981/02/16	65.50
1981/02/17	110.00
1981/02/18	143.00
1981/02/19	143.00
1981/02/20	128.00
1981/02/21	174.00
1981/02/22	234.00
1981/02/23	190.00
1981/02/24	270.00
1981/02/25	230.00
1981/02/26	258.00
1981/02/27	274.00
1981/02/28	246.00
1981/03/01	258.00
1981/03/02	186.00
1981/03/03	282.00
1981/03/04	234.00
1981/03/05	238.00
1981/03/06	242.00
1981/03/07	234.00
1981/03/08	238.00
1981/03/09	134.00
1981/03/10	258.00
1981/03/11	234.00
1981/03/12	254.00
1981/03/13	270.00
1981/03/14	298.00
1981/03/15	314.00
1981/03/16	146.00
1981/03/17	246.00
1981/03/18	258.00
1981/03/19	262.00
1981/03/20	234.00
1981/03/21	226.00
1981/03/22	242.00
1981/03/23	122.00
1981/03/24	258.00
1981/03/25	254.00
1981/03/26	314.00
1981/03/27	282.00
1981/03/28	290.00
1981/03/29	274.00
1981/03/30	282.00
1981/03/31	380.00
1981/04/01	395.00
1981/04/02	360.00
1981/04/03	375.00
1981/04/04	375.00
1981/04/05	308.00
1981/04/06	280.00
1981/04/07	300.00
1981/04/08	340.00
1981/04/09	316.00
1981/04/10	300.00
1981/04/11	268.00
1981/04/12	304.00
1981/04/13	252.00
1981/04/14	133.00
1981/04/15	192.00
1981/04/16	340.00
1981/04/17	400.00
1981/04/18	375.00
1981/04/19	320.00
1981/04/20	244.00
1981/04/21	335.00
1981/04/22	320.00
1981/04/23	304.00
1981/04/24	280.00
1981/04/25	330.00
1981/04/26	264.00
1981/04/27	148.00
1981/04/28	280.00
1981/04/29	365.00
1981/04/30	292.00
1981/05/01	256.00
1981/05/02	192.00
1981/05/03	224.00
1981/05/04	196.00
1981/05/05	268.00
1981/05/06	296.00
1981/05/07	308.00
1981/05/08	276.00
1981/05/09	276.00
1981/05/10	276.00
1981/05/11	160.00
1981/05/12	308.00
1981/05/13	304.00
1981/05/14	360.00
1981/05/15	272.00
1981/05/16	280.00
1981/05/17	260.00
1981/05/18	176.00
1981/05/19	312.00
1981/05/20	272.00
1981/05/21	308.00
1981/05/22	316.00
1981/05/23	296.00
1981/05/24	304.00
1981/05/25	168.00
1981/05/26	308.00
1981/05/27	500.00
1981/05/28	470.00
1981/05/29	420.00
1981/05/30	425.00
1981/05/31	350.00
1981/06/01	224.00
1981/06/02	325.00
1981/06/03	330.00
1981/06/04	325.00
1981/06/05	320.00
1981/06/06	375.00
1981/06/07	385.00
1981/06/08	340.00
1981/06/09	330.00
1981/06/10	325.00
1981/06/11	316.00
1981/06/12	308.00
1981/06/13	335.00
1981/06/14	335.00
1981/06/15	272.00
1981/06/16	268.00
1981/06/17	304.00
1981/06/18	420.00
1981/06/19	300.00
1981/06/20	260.00
1981/06/21	212.00
1981/06/22	127.00
1981/06/23	196.00
1981/06/24	192.00
1981/06/25	192.00
1981/06/26	164.00
1981/06/27	160.00
1981/06/28	115.00
1981/06/29	112.00
1981/06/30	142.00
1981/07/01	180.00
1981/07/02	80.00
1981/07/03	60.00
1981/07/04	127.00
1981/07/05	204.00
1981/07/06	82.50
1981/07/07	52.50
1981/07/08	38.00
1981/07/09	22.50
1981/07/10	87.50
1981/07/11	184.00
1981/07/12	204.00
1981/07/13	188.00
1981/07/14	224.00
1981/07/15	216.00
1981/07/16	192.00
1981/07/17	139.00
1981/07/18	87.50
1981/07/19	62.50
1981/07/20	48.00
1981/07/21	55.00
1981/07/22	62.50
1981/07/23	67.50
1981/07/24	80.00
1981/07/25	142.00
1981/07/26	220.00
1981/07/27	192.00
1981/07/28	200.00
1981/07/29	232.00
1981/07/30	264.00
1981/07/31	272.00
1981/08/01	276.00
1981/08/02	292.00
1981/08/03	308.00
1981/08/04	288.00
1981/08/05	244.00
1981/08/06	252.00
1981/08/07	232.00
1981/08/08	276.00
1981/08/09	308.00
1981/08/10	264.00
1981/08/11	240.00
1981/08/12	204.00
1981/08/13	200.00
1981/08/14	345.00
1981/08/15	316.00
1981/08/16	252.00
1981/08/17	184.00
1981/08/18	212.00
1981/08/19	200.00
1981/08/20	157.00
1981/08/21	115.00
1981/08/22	95.00
1981/08/23	127.00
1981/08/24	100.00
1981/08/25	97.50
1981/08/26	133.00
1981/08/27	145.00
1981/08/28	180.00
1981/08/29	172.00
1981/08/30	112.00
1981/08/31	60.00
1981/09/01	130.00
1981/09/02	130.00
1981/09/03	124.00
1981/09/04	151.00
1981/09/05	232.00
1981/09/06	272.00
1981/09/07	124.00
1981/09/08	180.00
1981/09/09	196.00
1981/09/10	240.00
1981/09/11	264.00
1981/09/12	200.00
1981/09/13	264.00
1981/09/14	208.00
1981/09/15	154.00
1981/09/16	154.00
1981/09/17	130.00
1981/09/18	97.50
1981/09/19	80.00
1981/09/20	115.00
1981/09/21	95.00
1981/09/22	87.50
1981/09/23	90.00
1981/09/24	82.50
1981/09/25	87.50
1981/09/26	109.00
1981/09/27	133.00
1981/09/28	67.50
1981/09/29	112.00
1981/09/30	145.00
1981/10/01	142.00
1981/10/02	139.00
1981/10/03	136.00
1981/10/04	236.00
1981/10/05	70.00
1981/10/06	75.00
1981/10/07	60.00
1981/10/08	72.50
1981/10/09	67.50
1981/10/10	65.00
1981/10/11	40.00
1981/10/12	36.00
1981/10/13	36.00
1981/10/14	100.00
1981/10/15	118.00
1981/10/16	82.50
1981/10/17	70.00
1981/10/18	87.50
1981/10/19	75.00
1981/10/20	204.00
1981/10/21	276.00
1981/10/22	232.00
1981/10/23	228.00
1981/10/24	192.00
1981/10/25	184.00
1981/10/26	109.00
1981/10/27	136.00
1981/10/28	204.00
1981/10/29	184.00
1981/10/30	220.00
1981/10/31	204.00
1981/11/01	216.00
1981/11/02	142.00
1981/11/03	180.00
1981/11/04	188.00
1981/11/05	228.00
1981/11/06	212.00
1981/11/07	208.00
1981/11/08	410.00
1981/11/09	308.00
1981/11/10	216.00
1981/11/11	151.00
1981/11/12	106.00
1981/11/13	118.00
1981/11/14	139.00
1981/11/15	157.00
1981/11/16	87.50
1981/11/17	160.00
1981/11/18	300.00
1981/11/19	284.00
1981/11/20	280.00
1981/11/21	276.00
1981/11/22	288.00
1981/11/23	188.00
1981/11/24	232.00
1981/11/25	236.00
1981/11/26	212.00
1981/11/27	232.00
1981/11/28	260.00
1981/11/29	160.00
1981/11/30	82.50
1981/12/01	133.00
1981/12/02	100.00
1981/12/03	97.50
1981/12/04	92.50
1981/12/05	82.50
1981/12/06	44.00
1981/12/07	30.00
1981/12/08	48.00
1981/12/09	67.50
1981/12/10	75.00
1981/12/11	65.00
1981/12/12	118.00
1981/12/13	130.00
1981/12/14	67.50
1981/12/15	112.00
1981/12/16	103.00
1981/12/17	124.00
1981/12/18	139.00
1981/12/19	142.00
1981/12/20	103.00
1981/12/21	50.00
1981/12/22	97.50
1981/12/23	72.50
1981/12/24	44.00
1981/12/25	57.50
1981/12/26	42.00
1981/12/27	172.00
1981/12/28	57.50
1981/12/29	75.00
1981/12/30	80.00
1981/12/31	82.50
#===========================================
# Number of observations = 365 / 365
# Average = 193.82