Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
1957	2.3	38.9	36.6	8.7	1.8	68.1	133.9	63.1	12.5	7.4	33.3	73	479.6
1958	73.2	72.6	43	32.3	17.1	109.8	44.3	41.9	36.6	60.9	11.2	73.8	616.7
1959	70.1	121.7	117.2	66.2	6.4	168	143.3	16	36	281.9	187.6	62	1276.4
1960	90.4	22.5	57.8	22.4	51.3	12.5	140.6	19	121.2	56.2	58.9	208.3	861.1
1961	70.9	91	145.8	24.6	8.6	63.6	126.2	98.6	72.7	97.8	161.1	141.2	1102.1
1962	152.2	117.9	43.1	15	46.9	0.5	53.6	49.2	144.3	39.2	28.8	135.8	826.5
1963	95.8	81.6	114.1	138.4	92	56.6	64	42.2	86.9	32.7	37.7	74	916
1964	14.8	19.5	34.9	125.9	35	73.9	51.1	74	44.1	101.5	38.8	64.4	677.9
1965	1.8	13.5	0.3	10.4	7.9	39	21.9	17.4	70.8	153.2	15.7	70.1	422
1966	20.6	95	37.1	3.3	23	85.1	30	38.5	66.3	100	151.9	189.5	840.3
1967	81.7	11.2	40.4	6.6	26.9	38.3	17.8	146.7	128.4	56.1	16.6	5.1	575.8
1968	42.7	4.1	67.6	23.4	117.9	13.5	25.7	33.8	7.6	29.7	63.7	117.6	547.3
1969	19.6	105.9	51.7	73.2	50.2	58.5	16.2	68.9	15.8	107.9	137.2	54.8	759.9
1970	199.4	60.5	95.8	47.7	76.9	20.6	0	32.1	89.5	31.6	108.7	130.2	893
1971	48	136	49.2	23.5	25.8	0.8	11.4	26.7	20.9	26.4	49.9	78.2	496.8
1972	110.3	42.1	49.8	45	29.1	32	2.5	50.4	6.7	53.2	51.5	4.8	477.4
1973	51	164.8	32.5	6.7	40.9	18.3	50	73	25.9	99.7	180.9	29	772.7
1974	137.6	82	157	202	149.4	47.8	31.8	250.8	38.8	134.6	107.2	2.7	1341.7
1975	24.8	93	126.2	159.8	12	343	56.6	32.2	63.2	121.8	45.4	14.6	1092.6
1976	131.6	99.9	192.6	33.6	1.2	54.2	15.2	13.4	58.2	357.2	110.8	31.2	1099.1
1977	39.4	233.9	57	30.8	74.8	18.4	2	12.2	87.2	2	2	13.6	573.3
1978	192.2	2.2	339.6	57.2	125.8	202.4	37.6	13.8	145.6	53.8	72.2	49.2	1291.6
1979	24.4	8.4	141.2	47	27.2	15	24	40.2	9.6	31	95	0	463
1980	76.2	38.2	3	11.2	48.4	15.6	18.2	13.2	22.8	33.8	42	41.6	364.2
1981	68.4	87.2	10.6	72.8	89.9	63.6	47.2	30.2	12	30.8	90.4	62.2	665.3
1982	36	29.4	108	22	1.6	17.8	11.4	17.2	62.4	4.2	3.6	26.4	340
1983	61	13	181.4	28	114.2	40.6	13.6	44	61.8	120.8	119	94.6	892
1984	172.4	118.8	71.2	97.7	28.4	87.6	155.8	31	63.8	36.8	59.8	95.4	1018.7
1985	12	25.8	111.6	79.4	63.6	29.6	12	47	126.6	166.6	109	50.6	833.8
1986	32	4.3	3.2	55.2	33.2	5	28.4	158.4	54.4	56.2	142.6	18.8	591.7
1987	72	89.4	47.2	30.8	34.8	23.8	52.8	60.2	23.4	64.4	67	96.2	662
1988	42.4	59.4	45.8	249.4	136.6	35.2	86.2	40.8	59.2	15.8	216.4	116.6	1103.8
1989	75.6	57.2	217.2	221.4	30.6	58	107.8	18.4	20.6	17	132.6	27.8	984.2
1990	59.8	145.4	30.2	138.4	98.6	13.2	44.2	205.8	75.8	42.4	34.4	14.8	903
1991	63.4	28	10	76.2	33.6	268	139.4	31.6	44.8	8.4	20.4	84.2	808
1992	120	115.8	42	29.4	18	79.8	5.8	42.4	78.6	70	131.6	121.4	854.8
1993	116.8	36.2	83.4	9.8	15.4	20.6	80.6	22.8	62.2	58	41.8	32.6	580.2
1994	7.4	80.8	49.8	139.2	17.8	37.6	4.6	4	4.2	70.6	46.8	52.6	515.4
1995	109	20.6	36	8.8	158.6	27.6	18.2	0.6	61.2	77.4	67.4	66.8	652.2
1996	92.8	33.2	31	59.2	86.2	31.6	58.4	38	131.4	46.8	83.2	48.4	740.2
1997	65.4	28.6	68.6	0	47.2	208.2	4.8	7.4	93.2	14.8	23.8	7	569
1998	95.6	30.8	2.8	44.8	78.4	77.8	36.2	213.6	42.2	51.6	109	12.4	795.2
1999	108.8	32.2	55.8	38.8	7.2	30.6	63.2	25	48.8	163	26.8	137	737.2
2000	51	43.4	96.8	95.2	25	43.4	12	29	79.8	41.2	128.6	39.2	684.6
2001	68	88.2	40.4	23.6	6.6	18.6	67.8	121.8	53.4	52.8	49.6	13.4	0
2002	38.2	177	31	26	19.4	15.1	6.8	21.2	27.2	8.8	10.8	53.4	434.9
2003	9.8	87.2	76.4	91.6	51	28.4	15	47.6	22.6	77.6	69.4	70.4	0
2004	62.2	33.2	21.8	20.4	3	9.6	22.6	27	42.2	99	54	144.2	539.2
2005	45	45.8	64.8	33.4	3.2	64	85.8	13	71.2	87	115.8	37.8	666.8
2006	106.4	7	36.8	7.2	66.6	95	51.2	10.2	29	3.6	26.6	34.4	474
2007	51	93.6	78.4	27.4	15.8	242.4	21.4	17.2	17.2	14	124.6	103.4	806.4
2008	38.4	127.2	32	27.2	6.7	52.8	18.2	69.8	24	24	90.6	91.2	602.1
2009	28.4	30.6	27.2	44	25.4	25.2	15.2	11.4	60.8	74.6	28.6	67.4	438.8
2010	29.4	181.8	54	4	144.2	14.4	61.8	46.2	50	65.6	101.8	102.4	855.6
2011	48.8	95.6	62.2	5.6	14.2	19	47.6	95.2	22.6	68.4	173.2	104	756.4
2012	19	139	196.8	52.4	17	76	23.6	9.4	38.6	82	35	37.8	726.6
2013	133.8	88.8	36.2	28.4	18.4	174.2	8.4	17.6	105.2	24.6	86.2	40.8	762.6
2014	3.8	50	170.6	60.4	9.8	59.6	3.8	152	29.6	69.4	23.2	114.6	746.8
2015	187.6	63.2	18.4	105	21.4	37.6	61.4	135.2	14.4	34	40.4	15.4	734
2016	155.6	19.6	19.2	28.2	20.4	208.8	45.2	31.8	89	34.2	55	129	836
2017	12.4	40.8	118	17.6	20.6	18.8	6.6	35.4	12	45.6	58.8	71.6	458.2
2018	43.2	90.8	20	14.4	20.2	27.8	3.6	28.6	42.4	49.8	82.4	132	555.2
2019	68.0	97.2	87.6	4.8	21.0	42.2	7.6	7.6	40.0	26.6	16.2	0.4	419.2