Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
1957	54.5	107.4	24.3	16.5	6.3	76.6	112	79	3.7	18.3	38.4	89.2	626.2
1958	162.1	165.3	101.2	71.6	21.1	89.3	64.7	39.7	49.1	49.7	16.5	155.3	985.6
1959	139.9	113.9	155	73.5	14.5	88.4	146.3	39.1	26.3	346	62.7	44.3	1249.9
1960	91	58.7	65.2	40.7	95.2	68.2	120.8	51.8	77.6	109.2	54.8	245.4	1078.6
1961	94.3	106.5	124.5	80.1	18	121.4	65.1	224.5	48	63.5	266.7	166.5	1379.1
1962	195.7	122.3	26.2	68	158.9	3.5	86.5	106.7	87.9	48.5	23.3	180.8	1108.3
1963	131.6	68.2	190.3	127.7	111.1	108.5	69.8	180.4	137.8	59.5	78.6	129.7	1393.2
1964	56.2	41.7	69.7	205.4	25.8	365.1	24.5	47.4	40.4	92.2	65.4	42.6	1076.4
1965	30.8	34.7	8	86.5	14	52.4	61	14.3	58.7	192.1	19.8	79.1	651.4
1966	29.5	96.6	94.3	24.4	16	162.6	26.6	53.5	67.1	129.6	176.8	111.9	988.9
1967	93.2	21.9	73.4	15.5	24.3	127.5	41.1	152.3	123.1	90.4	42.9	9.2	814.8
1968	103.6	4.3	91	43.7	144.2	5.4	34.2	26.5	9.4	13.2	20.4	111.8	607.7
1969	37	149.6	120.9	140	49	142.1	35.3	119	32.7	135.3	199	51.8	1211.7
1970	120.6	54.3	107.8	36.6	26.9	41.1	1.1	36.9	97.4	59.2	106.5	178.6	867
1971	139.6	185.6	61.9	34	38.2	12.7	17.7	55	46.1	21.8	103.6	166.4	882.6
1972	203.1	53.4	101.9	86.7	46.5	62.4	1.8	55.5	9.1	131.3	46.8	31	829.5
1973	179.1	179.1	49.9	39.7	66.3	71.9	52.2	63.3	27.6	70.6	153.8	81	1034.5
1974	127.6	100.8	142.4	193.4	245.6	204.6	79.5	215.2	48.3	130.9	88.6	3.5	1580.4
1975	29.6	90.2	130.7	102	20.7	428	39.2	31.9	110.3	126	41.3	25.8	1175.7
1976	190.1	180.7	237.4	38.1	6.8	117.4	145	10.4	68.9	230.7	77	31.2	1333.7
1977	25.6	172	114.2	37.2	174.5	69.6	5.2	14.2	100.1	7.2	4.4	20.1	744.3
1978	231.8	22.5	518.4	97.4	104.8	301	29.6	21.8	134.4	46.6	96.2	72.8	1677.3
1979	13	14.2	136.4	24.2	41.4	75.2	49.2	17.4	25.6	56.6	54	2.8	510
1980	80.1	96	48	7.2	123	25.2	31.4	4.8	14.6	51	39.9	52.2	573.4
1981	59.8	152.6	7.6	104.8	77.8	57.9	43.8	31.6	19.5	72.8	99.1	104	831.3
1982	77.7	22.6	141.4	20.6	1.8	69.4	25.8	7.8	108	21	12.4	15.6	524.1
1983	36.9	48.1	158.8	36.2	172.6	38	23.7	31.4	42	118.4	61.1	80.8	848
1984	143.2	125.1	129.4	125.4	48.8	109.6	171	21.2	76.8	50.8	181.2	28.4	1210.9
1985	59.6	35.6	90	88.8	96.1	69.3	35.2	28.3	122.7	160	117.6	59.2	962.4
1986	75.2	34.4	11.6	37.6	26.6	9.2	38	404.8	54.4	57.2	223	69.8	1041.8
1987	63.6	44.6	120.6	18.6	77.8	24.4	56.2	120.9	12.4	179.2	99	89.4	906.7
1988	73.6	71.8	32.6	430.4	147.2	57.1	103.4	53.7	58.6	6	103	76.4	1213.8
1989	90	46	139.8	245.6	43.4	123	70.9	23	10	18.8	72.4	63.2	946.1
1990	55.8	285.4	49	172.4	160	26.6	48.4	333	116.4	45	18.4	17	1327.4
1991	66.8	63.6	16.7	45.8	39.1	527	108.9	32.4	30.8	8.2	33.9	141.6	1114.8
1992	85.4	203.4	50.4	50.3	34.6	108	9	47.6	27.4	56.2	99.5	141.2	913
1993	63	93.9	92.4	2.8	12.8	25.2	67.1	33.4	78.5	56.9	72.8	44.2	643
1994	10.6	183.8	67	168	17.7	56.2	15	5.8	14.8	45.9	48	54.8	687.6
1995	90.6	26.8	72.6	6.8	153.5	52.8	10.6	0.4	194	57.8	100.2	75.6	841.7
1996	79.2	59.6	19.8	53.4	110.2	28	43.8	87.4	125	70.8	99.1	49.2	825.5
1997	77.2	50.4	37.6	0.6	113.6	159.4	25.4	7.2	113.2	20.4	13.2	29.4	647.6
1998	113.8	39.2	6	68.2	138.8	89.3	53	410.2	33.2	31	63.9	22.4	1069
1999	72	49	51.3	50.8	17.3	60.2	123	38.7	56.6	182.4	56.2	82	839.5
2000	27.2	18.2	173.2	51.1	30.4	74.2	31.7	28.6	43.2	38.8	158	51.2	725.8
2001	78	119	66.1	77.4	48.6	13.2	97	109.6	28.8	57.6	90.2	14.6	800.1
2002	48.9	176.2	64.4	47.9	33.6	39.4	20.4	12.9	29.8	4.1	9.4	60.1	547.1
2003	39.2	109	78	89	135.8	48.1	28.8	35.7	17.7	67.6	86.2	31.6	766.7
2004	70	69.8	35.6	23.2	4.2	18	32.2	24.6	47.4	124.6	56.2	72.8	578.6
2005	55.6	170.2	78	10.6	20.6	95	87.4	11.2	102	56.2	139.5	40.8	867.1
2006	87	31.6	24.7	7.2	34.2	102.6	109.6	24.4	79.6	1.4	47.2	59.6	609.1
2007	20.8	193	80.9	45.8	34.6	326.6	52.4	40.8	29.2	37	119.2	73	1053.3
2008	57.2	153.8	33	42.6	7.2	96.4	56	50.4	64	82.2	64.8	99	806.6
2009	11.2	70.6	35.8	65	102	42	25.8	15.4	39.6	71.2	29.8	103	611.4
2010	67.2	163.2	70.2	14.2	84.3	41.1	43.8	54.4	44.6	62.5	157.2	141.2	943.9
2011	54.4	64.8	88.6	56	69	90.4	103.2	61.8	35.4	78.6	85.8	69.2	857.2
2012	39.6	222	290.6	74.2	14.6	106.8	36.6	8.8	26.6	55.4	45.8	43.8	964.8
2013	123	206.8	74.8	82.8	42	234.2	23	6.2	65.4	13.2	85	40.6	997
2014	16.6	47.2	190.2	41.6	25.4	40.4	5.6	291.6	39.8	84	31.2	278.4	1092
2015	111.6	59.7	56.8	278.6	49.2	56.4	61.8	233.8	42.4	29.6	37.6	44.8	1062.3
2016	152.2	34.4	43.8	23.4	23.2	321	120.2	56.4	72.8	37.6	35.2	44.8	965
2017	40.8	105	225.4	26.4	19.2	92.2	2	34.4	2.8	50.8	69.8	45.6	714.4
2018	57.2	103	25.4	20.2	23.2	67.6	6.2	21.3	21.6	68	115.8	82.8	612.3
2019	62.0	10.6	123.8	13.2	11.6	90.0	13.4	37.0	54.2	17.8	10.4	2.8	446.8