DJF	MAM	JJA	SON
1905	985.533	985.842	983.926	985.332
1906	983.594	984.277	986.882	981.393
1907	982.248	983.907	989.104	985.016
1908	986.518	983.399	985.232	982.939
1909	989.048	981.489	983.594	983.908
1910	987.151	991.677	989.04	982.541
1911	991.614	993.1	983.607	986.135
1912	990.319	987.196	984.865	984.91
1913	987.214	988.332	988.05	983.983
1914	988.656	990.499	984.594	983.733
1915	984.602	990.775	985.741	986.01
1916	984.531	987.131	983.376	984.958
1917	985.44	988.784	986.358	983.083
1918	983.284	984.465	982.632	987.535
1919	984.599	984.703	979.576	983.461
1920	987.171	987.045	983.746	984.341
1921	987.685	990.722	985.965	981.683
1922	988.354	987.824	983.519	983.092
1923	985.835	991.177	990.775	987.162
1924	989.84	987.539	982.45	981.456
1925	990.859	985.292	984.603	985.537
1926	985.241	985.722	985.19	986.335
1927	982.99	984.484	986.674	984.289
1928	987.56	985.252	986.624	984.781
1929	989.014	986.534	985.439	982.813
1930	988.34	983.133	987.842	986.097
1931	988.936	983.063	982.281	983.73
1932	991.111	986.82	985.828	982.587
1933	987.881	986.253	983.017	983.04
1934	986.155	987.527	983.52	982.328
1935	987.516	985.511	987.337	983.436
1936	992.129	985.683	983.742	983.859
1937	986.176	987.382	986.651	981.621
1938	991.343	987.363	984.213	982.132
1939	987.082	984.346	989.622	983.365
1940	984.185	985.424	983.08	982.714
1941	988.357	988.148	984.25	983.972
1942	985.63	983.147	983.307	984.88
1943	983.191	986.729	984.95	983.169
1944	986.773	984.248	981.549	987.28
1945	988.42	984.274	984.28	984.025
1946	988.253	987.341	986.408	986.747
1947	984.79	981.012	988.836	981.065
1948	989.551	984.13	986.759	984.369
1949	991.727	986.245	987.65	981.264
1950	987.912	989.668	988.381	981.294
1951	990.991	989.556	983.609	988.558
1952	990.399	986.753	986.995	984.331
1953	987.807	985.398	984.539	985.45
1954	990.37	988.365	990.09	984.662
1955	989.525	988.504	988.926	984.439
1956	990.325	989.127	991.018	983.918
1957	992.296	989.224	989.745	988.269
1958	988.13	988.023	987.025	984.183
1959	989.175	989.864	989.969	982.765
1960	990.009	986.427	985.891	983.558
1961	985.381	987.683	986.434	984.015
1962	985.886	986.287	987.05	986.422
1963	989.183	986.369	987.959	984.834
1964	993.761	984.568	990.53	984.495
1965	989.593	985.089	985.809	983.687
1966	991.895	989.323	984.76	983.33
1967	990.261	986.097	985.951	984.584
1968	991.738	988.221	985.966	985.713
1969	987.594	984.187	986.101	984.792
1970	990.05	986.416	983.326	986.555
1971	991.248	987.291	987.134	984.834
1972	989.968	987.189	989.606	984.281
1973	986.549	986.141	986.14	984.424
1974	990.292	986.488	991.128	983.37
1975	989.626	989.427	986.724	983.202
1976	992.655	983.193	988.043	985.393
1977	986.652	986.497	990.837	983.595
1978	988.213	987.183	986.222	984.349
1979	991.589	985.07	983.036	984.398
1980	989.312	988.15	988.177	985.053
1981	987.292	986.324	988.02	983.773
1982	992.355	983.471	985.109	984.75
1983	991.333	987.343	987.831	983.426
1984	990.881	986.06	986.786	983.936
1985	988.868	988.609	984.824	982.901
1986	989.77	987.488	985.27	982.445
1987	988.972	987.345	985.778	982.64
1988	987.649	985.953	989.341	985.417
1989	987.809	984.718	983.67	982.029
1990	989.202	990.484	984.182	982.391
1991	990.407	986.697	987.982	985.582
1992	989.897	987.282	989.418	983.666
1993	987.014	984.488	983.392	982.49
1994	986.182	986.883	986.357	986.092
1995	988.168	982.542	992.858	983.503
1996	987.502	982.154	987.776	985.895
1997	988.053	980.238	986.251	985.861
1998	985.12	983.19	983.794	980.903
1999	985.563	983.139	987.722	981.411
2000	991.803	982.721	987.382	985.126
2001	986.695	985.01	986.97	981.173
2002	988.766	989.393	986.617	987.158
2003	988.835	983.268	983.734	985.303
2004	988.603	982.078	982.636	984.285
2005	988.62	985.08	985.826	982.565
2006	986.863	981.582	988.511	983.246
2007	984.368	987.662	993.582	990.478
2008	984.068	988.434	987.191	981.715
2009	991.433	989.429	985.974	984.193
2010	985.937	986.765	980.815	982.627
2011		986.643	992.201	985.91