DJF	MAM	JJA	SON
1905	987.975	988.227	982.849	985.3
1906	986.956	989.031	990.23	983.0
1907	983.983	987.237	990.212	985.6
1908	988.493	987.905	984.82	984.2
1909	988.631	988.878	985.391	984.8
1910	985.89	988.748	988.585	982.6
1911	994.147	989.819	984.473	984.1
1912	987.571	988.226	987.896	984.3
1913	986.597	992.434	990.984	983.8
1914	990.764	989.002	988.492	983.9
1915	986.826	990.927	989.356	987.2
1916	985.054	990.194	989.665	986.0
1917	982.895	988.356	992.721	982.6
1918	987.504	989.695	991.013	986.8
1919	985.736	986.849	986.871	985.6
1920	986.003	987.903	986.311	984.6
1921	987.573	989.432	990.41	981.5
1922	989.027	989.437	987.469	983.1
1923	987.595	990.739	988.421	986.3
1924	988.098	987.103	984.688	980.7
1925	994.587	989.114	985.144	985.8
1926	990.161	988.311	987.296	988.1
1927	983.311	991.446	989.847	984.9
1928	990.712	987.468	989.361	985.6
1929	989.026	989.765	986.984	984.5
1930	988.321	985.703	989.684	983.5
1931	987.822	986.67	988.271	983.0
1932	991.125	987.09	990.139	983.7
1933	985.947	988.755	986.905	983.0
1934	986.391	988.094	986.149	983.3
1935	989.013	990.805	988.456	984.7
1936	991.23	989.536	986.579	982.9
1937	987.917	989.907	985.535	981.9
1938	992.204	989.659	983.376	983.3
1939	990.181	989.078	988.714	984.2
1940	986.72	990.345	984.039	983.5
1941	991.135	989.519	989.28	984.3
1942	988.187	986.971	988.69	986.0
1943	984.973	990.181	987.742	983.7
1944	989.336	989.759	989.062	988.4
1945	992.167	990.963	989.814	984.6
1946	992.236	990.513	988.948	988.0
1947	987.257	986.864	989.732	980.8
1948	991.713	990.657	987.569	985.4
1949	992.509	988.372	989.592	980.5
1950	988.084	988.586	987.482	983.3
1951	990.513	993.563	988.094	988.5
1952	988.176	990.797	988.148	984.9
1953	990.329	991.788	985.864	988.5
1954	990.684	991.402	989.445	984.9
1955	990.821	990.502	990.187	984.7
1956	990.411	992.997	989.773	984.5
1957	993.869	992.491	990.157	987.8
1958	987.553	992.922	987.639	986.8
1959	989.042	994.3	989.706	984.7
1960	989.184	990.222	987.138	985.2
1961	985.982	989.911	988.705	986.2
1962	985.653	988.219	990.709	987.0
1963	991.79	989.043	992.835	986.5
1964	995.484	989.021	995.526	985.7
1965	992.281	990.067	991.605	985.3
1966	991.789	990.236	987.331	983.9
1967	991.914	988.154	986.718	985.6
1968	992.963	992.184	990.032	987.1
1969	987.69	990.137	988.574	986.2
1970	991.683	991.34	988.483	987.5
1971	992.217	989.658	988.527	985.9
1972	989.625	992.584	990.126	986.0
1973	985.399	990.739	988.643	983.8
1974	990.351	989.807	993.185	984.1
1975	989.524	992.203	991.989	984.9
1976	991.979	988.723	988.336	986.3
1977	986.244	992.097	989.445	984.9
1978	988.036	989.481	989.572	985.8
1979	992.932	989.178	986.208	985.2
1980	988.453	992.404	988.884	985.0
1981	988.088	991.246	990.03	984.3
1982	994.006	989.222	988.098	986.7
1983	989.376	991.724	989.723	983.4
1984	991.84	990.136	987.25	985.7
1985	989.251	991.51	987.629	984.1
1986	989.643	991.347	989.936	983.2
1987	988	989.823	988.085	984.0
1988	987.087	988.572	991.208	986.1
1989	988.308	987.468	986.063	983.4
1990	989.111	991.036	986.103	983.3
1991	990.449	989.62	989.179	986.6
1992	989.715	992.038	992.319	984.7
1993	987.734	988.669	985.057	984.1
1994	987.331	990.649	988.919	985.7
1995	987.848	987.607	991.556	983.8
1996	988.081	988.924	992.301	985.5
1997	989.723	987.078	988.042	986.4
1998	984.724	986.816	987.239	981.2
1999	985.032	986.056	989.142	981.0
2000	991.956	986.814	987.938	985.5
2001	985.933	988.099	986.269	982.4
2002	988.096	992.398	989.951	988.8
2003	988.907	989.11	985.917	986.0
2004	989.016	986.622	987.389	984.7
2005	989.567	987.876	989.051	982.9
2006	987.646	989.136	989.775	984.7
2007	983.812	989.754	992.052	988.7
2008	985.385	991.535	990.358	984.2
2009	990.616	991.734	989.849	985.6
2010	989.445	989.503	983.992	984.0
2011	983.881	989.344	990.513	985.1
2012	987.685			
2013	986.653