DJF	MAM	JJA	SON
1905	992.91	993.052	993.859	993.51
1906	989.947	994.258	993.9	985.767
1907	989.484	990.764	993.018	986.682
1908	993.649	991.702	991.481	982.762
1909	994.437	992.076	990.011	982.719
1910	992.266	993.998	996.081	983.626
1911	1000.225	993.636	987.49	984.26
1912	993.244	995.101	991.424	986.631
1913	991.623	996.824	994.561	987.622
1914	992.098	996.345	996.614	981.907
1915	990.971	998.922	992.737	989.634
1916	993.825	991.965	988.369	985.548
1917	990.154	998.076	988.315	985.09
1918	993.153	995.538	991.864	982.54
1919	990.922	993.986	987.227	982.881
1920	992.647	992.783	989.869	985.386
1921	992.312	993.24	993.838	984.482
1922	996.49	996.213	990.206	985.997
1923	990.383	995.672	997.736	988.637
1924	994.803	993.804	987.844	986.346
1925	999.439	991.486	989.561	987.35
1926	994.082	992.533	991.887	988.683
1927	986.048	998.418	989.913	982.967
1928	997.324	991.29	990.665	989.801
1929	995.74	993.249	991.284	983.735
1930	994.826	989.341	993.395	985.018
1931	993.883	992.409	989.403	984.386
1932	997.279	990.46	991.388	983.348
1933	991.12	994.172	988.049	982.384
1934	989.884	989.255	988.885	985.694
1935	992.075	992.471	996.192	983.359
1936	997.228	991.581	990.99	986.71
1937	990.883	995.818	991.152	981.697
1938	998.393	993.734	989.359	983.941
1939	995.422	994.318	1003.649	986.771
1940	988.892	993.543	988.348	982.229
1941	995.817	998.196	990.673	983.333
1942	992.269	989.836	989.784	984.491
1943	989.255	996.117	989.573	983.229
1944	996.262	991.94	990.253	985.442
1945	996.146	994.593	991.403	984.157
1946	996.552	994.096	992.668	985.885
1947	992.346	989.755	991.501	983.89
1948	996.22	993.933	992.064	989.368
1949	998.675	992.194	992.716	985.221
1950	992.985	995.203	991.183	982.013
1951	996.718	997.832	991.037	988.035
1952	994.149	993.948	990.866	988.161
1953	993.986	993.65	989.296	988.797
1954	996.225	994.531	994.384	984.318
1955	995.412	994.841	992.47	988.245
1956	996.467	993.28	995.533	985.922
1957	997.623	995.552	994.321	989.415
1958	991.716	997.857	995.626	986.445
1959	993.775	995.241	993.537	985.159
1960	995.036	989.52	989.676	986.1
1961	988.625	993.918	991.661	985.744
1962	987.541	991.529	992.122	989.501
1963	994.14	991.069	995.591	984.745
1964	1000.832	991.694	1000.487	989.584
1965	994.38	993.684	991.048	987.05
1966	997.179	995.354	990.139	985.277
1967	994.699	992.586	988.944	986.768
1968	997.554	994.98	989.671	993.087
1969	991.386	992.187	989.734	986.839
1970	994.812	993.97	988.464	987.57
1971	996.513	992.94	991.109	989.656
1972	993.831	994.898	996.514	984.522
1973	989.75	993.675	988.738	985.165
1974	994.984	988.922	997.813	984.27
1975	995.617	995.352	994.168	984.832
1976	998.758	991.477	993.628	985.524
1977	989.563	992.868	994.165	984.478
1978	992.76	991.574	993.497	985.701
1979	997.225	988.413	988.381	985.599
1980	992.827	993.504	993.657	989.52
1981	991.689	994.536	994.266	985.698
1982	997.807	989.888	990.404	987.285
1983	996.204	993.3	989.46	984.791
1984	995.693	992.611	990.531	985.66
1985	993.117	991.547	989.409	983.32
1986	992.372	993.367	992.414	986.749
1987	992.295	993.592	991.211	987.087
1988	991.143	993.785	991.145	990.769
1989	991.418	989.806	987.52	984.766
1990	993.646	996.86	992.388	984.207
1991	995.3	995.118	995.327	988.129
1992	993.668	993.949	997.027	984.968
1993	990.259	989.769	987.645	984.138
1994	989.133	991.401	991.419	991.589
1995	990.578	990.324	999.249	985.798
1996	991.642	990.684	994.131	989.456
1997	990.943	986.754	989.238	986.294
1998	987.194	987.278	984.8	984.643
1999	989.064	988.851	989.464	981.525
2000	994.899	987.74	991.615	987.206
2001	991.124	989.979	990.318	983.343
2002	991.354	995.401	993.782	989.657
2003	993.785	988.564	988.394	986.617
2004	993.434	988.307	991.605	986.18
2005	994.462	990.547	991.555	985.297
2006	991.482	989.623	990.716	984.152
2007	986.768	992.006	992.079	987.945
2008	989.156	992.483	987.127	985.175
2009	992.242	992.996	990.467	986.438
2010	990.513	987.458	981.208	982.973
2011		991.915	992.69	985.597