Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
1957	23.1	51.7	25.6	18	12.8	39.9	101.4	81.6	4.8	19.8	39.3	79.3	497.3
1958	91.3	54.4	49.4	54.1	45.4	89.6	84.8	58.6	52.6	60.1	33.4	115.8	789.5
1959	57.7	167.4	86.5	93.4	9.6	115.8	114.7	25.4	35.6	236.8	71.3	28.6	1042.8
1960	82.1	70	42	34.8	78.9	16.3	130.7	62.3	96.5	79.6	51.8	157	902
1961	76.6	62.6	156.8	45.7	11.4	44	106.9	75.7	47.6	125	221	79.8	1053.1
1962	130.3	73.9	19.9	35.9	57.8	13	29.3	91.8	78	53.5	23.1	169.5	776
1963	82.6	48.9	67.2	107.6	85.1	92.7	72.2	87.9	79.5	54.3	50.4	97.1	925.5
1964	43.4	1.1	62.9	98.9	23.8	45.4	77	67.4	63.7	112.4	27.9	46.2	670.1
1965	4.3	1.3	5.9	79.4	10.2	20.7	29.2	20.2	41.7	116.2	31.3	48.9	409.3
1966	14.7	41.3	63.7	14.8	17.9	48.5	25.1	35.6	44.1	88.8	87	114.9	596.4
1967	65.4	42.6	16.3	25.4	20.3	52.6	18.4	122.9	84	70	18.7	2.1	538.7
1968	133.6	2.3	28.5	39.4	154	25.1	32.3	60.3	11.8	63.9	25.4	121.8	698.4
1969	30.3	160.4	94.1	172.2	56.9	61.7	37.8	48.5	36.5	166.3	80.7	38.6	984
1970	124.9	96.7	65.2	34.1	61.3	34.1	4	61.5	107.3	63.9	52.6	123.8	829.4
1971	91.9	184.7	47.9	22.9	28.7	8.2	11.5	64.1	46.4	17	105.2	137.1	765.6
1972	201.3	37.8	25.1	57.5	30.4	12.9	9.9	60.5	22.3	97.1	36.2	22.6	613.6
1973	52.3	179	33.8	20.7	39.3	62	32.2	86.4	33.1	88.9	146.3	53.8	827.8
1974	73.6	96	86.4	223.2	144.6	54.6	70	134.4	65.4	94	64.8	0	1107
1975	53.2	52.4	62.2	75.2	10.2	229.8	81.6	32.8	88.6	113.4	18.2	27.3	844.9
1976	199.2	89.2	91.6	29.9	3.4	56	74.8	12	58.6	138.6	58.8	22.2	834.3
1977	24.3	57.8	78.2	30.7	131.6	46.4	21.8	29.2	85.4	10.6	1.8	21.2	539
1978	212	8	289.4	37.6	91.4	113.8	64.2	23	99.4	58.8	93.2	50.8	1141.6
1979	5.2	9	70.6	28.8	36.4	21.6	42	34	34.4	64.8	85.2	0.6	432.6
1980	97.2	65	39.4	2.6	119.2	36.8	42.4	13.6	38.8	59.2	41.4	32.6	588.2
1981	32	80	1.7	46.8	53.2	68.6	93.5	49.8	26.2	60	98.2	139.2	749.2
1982	53.6	12.6	90.4	35.6	7.6	31.8	14.2	19.4	90.6	14.8	4	20.8	395.4
1983	44	63	101.2	49.8	140.7	37	27.4	32.8	61.6	123.2	63.6	92.8	837.1
1984	174.2	77.4	53.5	139	30.8	60.2	123.2	58.2	65.6	53.6	67.6	58.2	961.5
1985	26.8	17.6	85.2	47.8	66.4	38.8	22.8	52.2	108.4	118.8	72.8	49.6	707.2
1986	85.2	2.6	1.4	43.6	41.8	9.6	78.4	116.2	46	81.2	109	25.8	640.8
1987	28.2	34.1	67	21.6	61.6	24.2	62.4	97.4	27.2	83.4	75.4	109.4	691.9
1988	33	46.2	24.2	173.2	79	38	72.8	63.2	87.4	25.2	139	57.2	838.4
1989	70.6	36.8	141.6	136.4	48.4	69	51.4	45	18.4	29.2	64	55.4	766.2
1990	54.2	148.6	21.8	136.2	118.4	51.2	80	199.8	72.4	49.8	16.4	12.2	961
1991	70.8	34	10	24.6	21	120.4	90	94.8	39.6	10.8	36	85	637
1992	91.2	99	53.4	26.8	45	60.6	15.8	77.4	46	55.8	61.6	129.2	761.8
1993	54.2	29.8	90.6	1.4	12.6	45.4	64.8	25.2	75	50.2	73.6	63	585.8
1994	10	134.4	39.6	82.2	20.4	51	11.2	19	5.8	40.4	69.2	37.8	521
1995	87.2	15.4	29.6	7	121	41.8	61.6	6.2	115	41.8	87.4	73.4	687.4
1996	91.6	40.4	52	34.2	80.4	36.8	54.6	56.4	72.8	102	73.2	122.2	816.6
1997	79.2	26	39.4	0	36	174.8	23.2	23.8	103.6	21.6	16	34.1	577.7
1998	82	15.2	34	77.4	63.8	90.2	74.2	177.2	39	83.8	83.4	30.4	850.6
1999	35.2	28.2	64.6	27.8	29.8	29.4	46.8	59.8	67.2	188.2	57.4	121.2	755.6
2000	20.2	8.7	105.4	35.6	44.2	56.4	38.4	46	46	46	129	35.4	611.3
2001	74.8	154	43	19.2	7	13.4	65.7	66.2	36.2	66.8	50.8	9.8	0
2002	18.4	150.8	37.4	19	26	39	39.6	39.8	34.6	7.6	4.6	47.2	464
2003	21.4	64.6	50.5	21.4	56.6	40.6	38.6	42.6	47.6	60	76.2	23.4	0
2004	51	49.8	38.8	8.2	5.4	15.2	21.2	31.5	41.8	102.8	73.8	43.4	0
2005	62.8	58.6	41.4	7.2	9.4	73.6	63	40.1	104.6	54.8	113.8	33.2	0
2006	117	22.2	15.8	4.6	21.7	59.6	46.8	25.8	59.8	0	27	31.4	431.7
2007	42.2	47.6	57.2	30.2	35	243.8	22.4	27	15.8	30	111.6	83	745.8
2008	50.8	52.2	31.6	29.2	12.4	40.4	40	56.4	54.2	92.4	73.2	101.4	634.2
2009	17.8	54	10.6	95	38.4	27.8	46.6	31.8	43.2	50.4	18.6	92.2	526.4
2010	42.8	121.4	45.8	15	65.8	24	54.8	89.4	43.6	51.2	120.8	203.4	878
2011	17.6	83.4	61.4	21	35.6	51.8	35.6	63.2	36.2	32.6	75.4	69.8	583.6
2012	56	197.6	229.4	40.4	24.8	70	33.8	37	60.4	34.6	24	46.8	854.8
2013	74.6	77.2	92.8	15	28	182.6	34.8	21.2	34	28.8	56.2	24.2	669.4
2014	13	113.8	114.8	57.4	42.2	51.8	17.4	145.8	40	50	18.2	154.4	818.8
2015	156.6	33.2	18.2	104.4	29.8	55.4	77.2	123.8	27.2	19	54	13.2	712
2016	87.4	13.4	53.8	17.4	33.4	173.1	86	56	101	83.6	32.2	61.2	798.5
2017	15.4	59	132.6	37.4	30.8	27.8	16.2	59.4	25.2	61.2	89	61.2	615.2
2018	37.2	118.2	11.8	11.4	20	33.2	12.8	37.8	31	48.8	91	92	545.2
2019	40.8	24.0	105.0	2.2	22.4	75.0	15.0	26.2	53.8	14.0	17.5	0.8	396.7