YEAR	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANNUAL
1869	35.1	34.5	34.8	49.2	57.7	69.3	72.8	71.8	65.6	50.9	40.3	34.7	51.4
1870	37.5	31.3	34.1	50.7	60.9	72.9	76.6	75.3	67.6	56.7	45.5	34.1	53.6
1871	28.3	30.2	44.2	52	60.4	68.2	72.3	73.6	60.8	55.6	38.8	29.2	51.1
1872	28.8	29.9	30.5	49.4	61.5	71.2	77.5	75.6	66.4	53.2	41	26.7	51
1873	28.6	29.5	35.7	46.7	58.8	70.3	75.4	72	65.4	55.8	37	36.5	51
1874	34.2	31.3	37.1	41.1	58.8	70.1	73.9	70.3	67	55.1	43.4	33.8	51.3
1875	23.8	25.2	34.1	43.1	60.1	69.2	74	72.9	64	53.6	39.3	33.9	49.4
1876	36.6	31.8	34.4	47	60.2	73.5	79.4	75.2	63.7	50.6	45.2	24.9	51.9
1877	27.7	37	35.8	47.7	59.6	70.2	75	75.4	66.9	55.8	44.5	37.4	52.8
1878	30.3	32.2	44.1	53.3	59.4	67.7	77.8	74.2	68.3	58.7	43.8	32.8	53.6
1879	26.9	28	40	48.4	63.3	70.2	75	72	63.3	60.3	43.4	37.3	52.3
1880	39.6	37.2	36.5	50	67.9	73.1	74.9	72.7	67.1	53.6	38.7	26.5	53.2
1881	24.7	28.7	36.7	46.3	62.3	65.2	73.7	73.8	73.4	58.8	45.2	39.4	52.4
1882	28.8	35.2	40.4	47.6	56.6	71.8	75.8	73.4	67.1	57.1	39.2	30.6	52
1883	25.2	30.2	32.7	47.1	61.1	74	74.5	70.4	62.6	52.2	43.7	32	50.5
1884	24.7	34	37.7	48.1	59.8	71.3	71.9	73.7	72	57.7	44.3	33.6	52.4
1885	29.4	22.7	30.6	49.4	59.9	71	78.5	72.4	64.4	54.1	44.9	35.7	51.1
1886	26.8	27.5	37.6	52.9	60.2	68	74.8	70.2	65.3	54.9	44.6	29.6	51
1887	29.1	32	32.3	46.3	63.8	69.6	78.2	70	61.8	52.2	41.4	33.8	50.9
1888	23	29.3	30	46	58	70.9	70.7	72.6	62.8	48.6	45.5	34.7	49.3
1889	35.7	27.8	39.7	51.2	63.5	70.5	73.2	70.6	65.2	49.7	44.7	40	52.7
1890	37.6	37.9	35.6	49.1	60.3	70.1	73.1	72.7	67.1	54.5	43.9	29.9	52.7
1891	33.8	36.5	35.8	49.7	57.8	71.4	72.4	75.5	71.6	54.7	44.3	42.3	53.8
1892	31.5	33.4	34.2	48.8	59.2	73.5	74.9	74.3	64.7	53	43.4	32.2	51.9
1893	23.7	29.4	35.5	46.4	58.2	68.1	73.6	73.5	63.3	56.2	42.9	34.5	50.4
1894	33.6	28.6	42.8	49.2	60.9	70.4	75	70.6	68.8	55.3	41.5	36.8	52.8
1895	29.8	24.1	35.4	50.1	62.5	72.9	72.6	75.6	70.9	52.5	47.8	38.1	52.7
1896	29.8	31.9	32.6	52.3	67	69.8	76.8	76.1	67.3	53.9	49.9	34.2	53.5
1897	30.8	33.2	40.8	50.5	61.5	67.5	75.9	73.2	67	56.6	46	38.3	53.4
1898	35.3	35.8	45.6	47.7	58.4	71.2	76.1	75.3	70.3	59.5	45.6	34.6	54.6
1899	31.4	27.9	37.9	49.5	62.3	74.1	76.2	75.2	66.1	58.6	46	38.2	53.6
1900	31.8	30.3	33.4	50	59.6	70.5	76.4	76.2	70.5	61.3	49.1	36.3	53.8
1901	32.5	26.3	38.4	47.8	57.4	70.6	77.7	75	68.2	55.9	39.7	35.7	52.1
1902	30.6	29.7	44.4	50.6	58.9	66.8	72.8	71.9	66.7	58.2	51.6	32.5	52.9
1903	30.4	33.2	47.8	52	62.8	64.2	74.6	69.1	67	58	42.2	31.5	52.7
1904	25.3	25.4	36.4	46.6	63.4	70.2	74.6	73	66.8	53.8	42.4	30.3	50.7
1905	29.3	24.8	40.4	49.9	61.5	69.9	77.1	74.3	69.6	59.4	44.1	38.9	53.3
1906	38.4	32.8	35.6	51.6	63.1	73.6	77.1	77.1	70.1	57.5	45.5	34.2	54.7
1907	34.9	25.9	42.5	46.7	56.2	68.6	77.4	73.4	66.9	52.7	46.2	38.8	52.5
1908	33.5	27.5	41.4	52.2	63.4	73	79.8	75.8	68.6	60.8	46.8	37.6	55
1909	34.7	37.7	37.8	48.4	61	72.1	73.5	72.2	66.8	54.5	49.5	32.4	53.4
1910	31.1	30	43	55.1	61	68.7	77.2	72	69.4	58.8	42.3	30	53.2
1911	36.3	31.3	34.7	47.8	64.1	69.8	77.6	72.8	67.6	56.2	42.7	39.4	53.4
1912	23.7	28.8	37.6	50.4	62.3	69.7	75.7	71.7	66.6	59.2	47.8	39.3	52.7
1913	40.9	31.3	44.8	52.5	60.7	70.5	76.1	73.4	64.6	58.6	47.3	38.7	55
1914	31.5	25.4	36.5	47.9	64.5	68.9	72.1	74.6	66.9	59.4	44.5	31.6	52
1915	34.5	35.9	36.8	54.4	59	68	73.9	71.6	70	57.7	46.3	33.5	53.5
1916	36	27.9	32.4	48.4	61.4	65.7	75.4	74.8	67.4	57.7	45.5	34	52.2
1917	32.9	28.3	39.3	48.4	54.3	70.3	75.9	76.2	63.6	53	41.6	25	50.7
1918	21.7	30.4	42.1	50.7	65.3	67.8	74.6	76.5	63.9	59	46.6	39.4	53.2
1919	35.6	34.9	43.3	50	62	70.9	75.1	71.1	67.6	59.2	45.2	30.2	53.8
1920	23.4	28.5	39.9	48.1	58.8	69.2	73.8	74.3	68.5	61.1	44.4	37.3	52.3
1921	33.4	34	48.4	56.1	61.2	71.2	77.3	71.6	72.1	56.3	44.7	32.5	54.9
1922	28.2	33.6	41	51.5	64.6	71.8	73.7	72.4	68.2	58.2	45.7	33.6	53.5
1923	30	26.2	36.8	50.3	60	73.4	73.8	72.6	68.3	56	45.2	42	52.9
1924	32.7	28.9	39.2	49.1	57.3	67.8	74.1	74.3	64.1	57.1	44.4	34	51.9
1925	28.4	37.9	44.2	51.8	59.6	74.3	73.6	73.3	68.8	50.6	43.9	34.8	53.4
1926	32	29.2	35.7	47.3	60.1	66.8	75.1	74	65.7	55.1	44.9	28.9	51.2
1927	30.9	36.4	43	48.6	59	67.3	74	68.5	67.9	59.6	49.2	36.7	53.4
1928	34	33	38.8	48.4	59.4	67.4	75.9	75.4	64.7	58.9	47.4	39.3	53.6
1929	31.9	32.9	45.1	51	61.7	71.5	75.9	73.1	69.4	54.6	46.2	35.8	54.1
1930	33.3	37	40.3	48.4	63.7	73.5	76.4	73.6	72	55.6	45.5	34.6	54.5
1931	32.8	33.9	40.3	51.1	61.5	70.7	77.5	75.2	72.3	61.3	51.9	41	55.8
1932	43.2	36.1	37.3	49	62	70.5	76.1	76.7	69.5	58.5	43.9	39.1	55.2
1933	40.3	34.1	38.4	50.4	64.4	72.4	75.8	74.9	69.6	56.1	41.8	32.7	54.2
1934	34.7	19.9	37.3	50.3	63.7	73.8	77.7	72	69.2	54.5	48.9	33.4	53
1935	28.9	31.2	43.4	49.8	59.9	70.1	77.2	74.7	65.3	57.5	48.6	30	53.1
1936	29.3	25.7	45.2	47.9	64.4	69.8	76.2	75.4	68.2	57.6	42.7	38.6	53.4
1937	40.2	34.8	36.5	49.6	64.2	71.8	76.6	76.6	66	55.4	46.4	35.4	54.5
1938	32.1	35.4	44.2	53.7	60.8	70.3	76.6	78.2	66	59.8	48.3	37	55.2
1939	32.2	37	39.2	48.3	64.9	73	76.6	78.1	68.6	57.3	43.7	36.9	54.7
1940	25	32.9	35.1	46.8	60.7	70.4	76.2	71.4	66.6	53.8	45.3	38.4	51.9
1941	29.4	31.1	35.9	56.9	64.8	71.9	75.8	74	70	60.7	50	38.3	54.9
1942	30.7	29.7	43	53.8	65.3	71	76.3	73.6	68.3	58.8	47	31.1	54.1
1943	30.8	34.6	40.2	46.1	62.6	76.2	76.9	75.9	67.4	55.7	45.4	33	53.7
1944	33.9	33.2	37.6	48.9	67	72.3	79.4	77.8	70.1	57.1	46	32.4	54.6
1945	25.1	33.9	51.1	55.6	59.2	70.9	74.6	73.4	70.3	56.2	47.6	31	54.1
1946	34.1	31.7	49.8	50.4	61.9	69.7	75.4	70.9	69.8	61.7	50.5	37.9	55.3
1947	37.2	29.3	37.8	50.5	59.9	68.4	75.5	76	68.6	63.6	44.2	34	53.8
1948	25.4	30.7	42.1	51	60.2	69.4	77.2	75.2	70.3	56.7	52.4	38.3	54.1
1949	38.6	38.6	42.9	53.8	63.1	74.3	79.6	76.7	66.2	63.1	46.3	39.4	56.9
1950	41.4	31.6	36.4	48.5	58.8	70.3	75	73.1	64.8	60	48.4	35	53.6
1951	36.5	36.2	41.5	53	63.3	69.8	76.8	74.5	68.2	58.6	43.5	38.6	55
1952	36.2	36.2	40.2	55	60.7	73.6	80.3	74.9	69.9	55.7	48.6	38.4	55.8
1953	37.6	38.4	43.4	52.3	63.4	73.6	77.8	75.8	70.4	60.7	49.7	41.3	57
1954	30.8	40.1	41.6	53.8	59.8	71.6	76.7	72.8	67.4	61.7	46.4	35.9	54.9
1955	31	35	41.7	53.5	65.4	68.9	80.9	78.1	67.8	59.8	44.3	29.7	54.7
1956	32	36.6	37.4	48.2	58.7	71.4	72.9	74.2	64.8	58.1	46.7	40.9	53.5
1957	28.5	37.3	41.9	53.2	63.1	74.3	77.7	73.6	69.7	56.2	49.4	40.2	55.4
1958	31.9	27.4	40.3	52.9	59.1	67.2	76.1	75.2	67.6	55.5	47.9	29.4	52.5
1959	31.1	32.1	40.1	53.8	66.4	71.2	76.3	77.5	72.3	59.8	45.8	38.4	55.4
1960	33.9	36.3	33.3	54.1	62.6	71.8	74.6	74.9	68	58.1	49.7	30.9	54
1961	27.7	36.7	41.5	49	59.9	72.3	78.1	76.4	73.6	61.1	48.8	35.5	55.1
1962	32.6	31.8	43.1	53.3	64.5	72.5	74	72.4	64.9	57.4	43.2	31.5	53.4
1963	30.1	28.3	43.7	53.7	61.1	70.9	76.4	72.1	63.1	61.8	50.4	31.2	53.6
1964	35.7	32.9	43.1	49.7	65.4	71.6	75.4	72.9	67.2	55	49.4	36.4	54.6
1965	29.7	33.9	40	50.6	66.4	70.1	74.3	73.2	67.5	57.3	46.8	40.5	54.2
1966	32.2	35.1	42.7	49.7	61.6	75.4	79.7	76.9	66.5	56.2	48.9	35.7	55.1
1967	37.4	29.2	37.6	49.6	55.2	72.8	75.3	73.9	66.7	57.2	42.5	38.2	53
1968	26.7	28.9	43.3	55	59.6	69.7	77.3	76	70.6	60.5	46.9	34.3	54.1
1969	31.8	32.6	40.1	55.9	65.3	73.1	74.8	77.4	69	57.7	46.4	33.4	54.8
1970	25.1	33	38.7	52.1	64	70.9	77.1	77.6	70.8	58.9	48.5	34.4	54.3
1971	27	35.1	40.1	50.8	61.4	74.2	77.8	75.9	71.6	62.7	45.1	40.8	55.2
1972	35.1	31.4	39.8	50.1	63.3	67.9	77.2	75.6	69.5	53.5	44.4	38.5	53.9
1973	35.5	32.5	46.4	53.4	59.5	73.4	77.4	77.6	69.5	60.2	48.3	39	56.1
1974	35.3	31.7	42.1	55.2	61	69	77.2	76.4	66.7	54.1	48.2	39.4	54.7
1975	37.3	35.8	40.2	47.9	65.8	70.5	75.8	74.4	64.2	59.2	52.3	35.9	54.9
1976	27.4	39.9	44.4	55	60.2	73.2	74.8	74.3	66.6	52.9	41.7	29.9	53.4
1977	22.1	33.5	46.8	53.7	65	70.2	79	75.7	68.2	54.9	47.3	35.7	54.3
1978	28	27.2	39	51.6	61.5	71.3	74.4	76	65	54.9	47.8	38.9	53
1979	33.6	25.5	46.9	52.6	65.3	69.2	76.9	76.8	70.5	57.3	52.5	41.1	55.7
1980	33.7	31.4	41.2	54.5	65.6	70.3	79.3	80.3	70.8	55.2	44.6	32.5	55
1981	26.3	39.3	42.3	56.2	64.8	73	78.5	76	67.6	54.4	47.7	36.5	55.2
1982	26.1	35.3	42	51.2	64.1	68.6	77.9	73.2	68.3	58.5	50.4	42.8	54.9
1983	34.5	36.4	44	52.3	60.2	73.4	79.5	77.7	71.8	57.9	48.9	35.2	56
1984	29.9	40.6	36.7	51.9	61.6	74.5	74.7	76.7	65.9	61.8	47.3	43.8	55.5
1985	28.8	36.6	45.8	55.5	65.3	68.6	76.2	75.4	70.5	59.5	50	34.2	55.5
1986	34.1	32	45.1	54.5	66	71.6	76	73.1	67.9	58	45.7	39	55.3
1987	32.3	33.2	45.2	53.4	63.6	72.8	78	74.2	67.9	53.8	47.7	39.5	55.1
1988	29.5	35	43.6	51.2	62.7	71.8	79.3	78.8	67.4	52.8	49.4	35.9	54.8
1989	37.4	34.5	42.4	52.2	62.1	72	75	74	68.1	58.2	45.7	25.9	54
1990	41.4	39.8	45.1	53.5	60.2	72.1	76.8	75.3	67.5	61.9	50.4	42.6	57.2
1991	34.9	40	44.6	55.7	68.7	74.1	77.7	77.1	67.5	58.4	48.3	39.6	57.2
1992	35.7	36.4	40	50.5	61	70.3	74.2	73	67.2	54.5	46.5	37.9	53.9
1993	36.3	30.8	39.7	53.3	65.7	73.3	80.2	77.2	67.3	56	48.8	37.3	55.5
1994	25.6	30.6	40.7	55.6	61.8	75.2	79.4	74	67.6	58	52	42.2	55.2
1995	37.5	31.6	45	51.9	61.9	71.8	79.2	78.6	68.3	61.6	43.6	32.4	55.3
1996	30.5	33.9	38.9	52.2	61.1	71.4	73.4	74.5	68	56.4	43	41.3	53.7
1997	32.2	40	41.9	51.7	59.4	70.9	75.8	73.3	67	56.8	44.5	38.3	54.3
1998	40	40.6	45.4	54	64.3	69.2	76.5	76.7	70.2	57.6	48.1	43.2	57.2
1999	33.9	38.9	42.5	53.5	63.1	73.2	81.4	75.5	69.1	56	50.6	40	56.5
2000	31.3	37.3	47.2	51	63.5	71.3	72.3	72.7	66	57	45.3	31.1	53.9
2001	33.6	35.9	39.6	54.2	63.8	72.9	73.2	78.7	67.7	58.5	52.7	44.1	56.3
2002	39.9	40.6	44.1	56.1	60.7	71.4	78.8	77.7	70.2	55.2	46	36	56.4
2003	27.5	30.1	43.1	49.8	58.7	68.3	75.8	76.7	67.9	55.1	50	37.6	53.4
2004	24.7	35	43.5	53.6	65.2	71.2	74.5	74.2	69.3	56	48.2	38.4	54.5
2005	31.3	36.5	39.4	55.1	58.9	74	77.5	79.7	73.3	57.9	49.6	35.3	55.8
2006	40.9	35.7	43.1	55.7	63.1	71	77.9	75.8	66.6	56.2	51.9	43.6	56.8
2007	37.5	28.2	42.2	50.3	65.2	71.4	75	74	70.3	63.6	45.4	37	55
2008	36.5	35.8	42.6	54.9	60.1	74	78.4	73.8	68.8	55.1	45.8	38.1	55.3
2009	27.9	36.7	42.4	54.5	62.5	67.5	72.7	75.7	66.3	55	51.2	35.9	54
2010	32.5	33.1	48.2	57.9	65.3	74.7	81.3	77.4	71.1	58.1	47.9	32.8	56.7