DJF	MAM	JJA	SON
1905	990.051	984.066	986.888	979.401
1906	988.119	985.726	991.195	985.702
1907	987.041	983.318	992.392	987.625
1908	988.369	983.94	985.982	987.991
1909	989.815	983.156	986.05	989.066
1910	988.115	985.688	988.629	986.896
1911	994.929	991.099	984.966	985.243
1912	989.936	983.603	987.639	985.87
1913	989.803	989.525	989.03	985.865
1914	992.566	985.73	986.824	984.574
1915	990.347	989.703	990.464	991.567
1916	987.761	990.579	992.251	986.307
1917	985.838	986.161	991.809	988.766
1918	990.239	985.67	991.023	988.558
1919	988.599	985.698	986.487	986.389
1920	990.329	986.245	988.345	985.557
1921	991.411	989.623	990.305	987.283
1922	992.513	986.403	987.786	985.572
1923	986.926	987.68	990.906	986.542
1924	990.267	985.94	985.488	984.547
1925	997.88	985.845	985.714	983.033
1926	990.799	985.845	989.349	987.449
1927	984.894	983.611	988.889	986.164
1928	992.791	985.209	989.522	990.023
1929	989.62	986.305	987.46	983.795
1930	991.02	983.137	988.341	987.768
1931	990.104	985.649	988.781	987.941
1932	993.301	985.958	990.319	982.539
1933	988.639	987.877	987.07	984.732
1934	987.38	986.714	986.659	985.916
1935	990.786	986.831	990.635	985.665
1936	993.144	986.958	988.649	986.177
1937	987.474	988.115	986.05	984.132
1938	994.102	989.644	984.416	984.504
1939	992.472	985.958	990.77	984.056
1940	987.877	989.211	983.302	987.109
1941	993.091	988.933	988.631	986.374
1942	989.469	986.314	988.462	989.931
1943	986.582	986.683	988.114	983.869
1944	991.435	987.286	987.511	989.35
1945	993.272	990.026	989.854	986.678
1946	993.38	986.346	991.144	985.894
1947	987.814	983.784	991.495	984.575
1948	992.365	987.31	989.071	987.801
1949	993.984	985.624	988.334	984.282
1950	989.001	987.201	986.467	987.181
1951	992.047	992.113	988.449	986.673
1952	988.628	987.553	990.11	986.176
1953	990.623	988.898	988.06	986.978
1954	992.83	987.723	989.727	985.983
1955	993.04	986.935	990.018	988.464
1956	992.471	991.466	993.162	984.792
1957	994.381	989.514	988.441	987.082
1958	988.385	991.172	988.928	984.568
1959	989.709	992.101	989.589	982.553
1960	991.744	986.263	987.598	984.056
1961	987.022	989.261	989.074	983.612
1962	987.093	988.617	991.391	988.688
1963	992.951	989.075	993.33	986.994
1964	998.66	986.99	995.84	987.899
1965	994.356	989.925	990.462	983.373
1966	995.143	989.606	988.394	983.333
1967	993.886	988.648	987.894	985.21
1968	995.026	988.234	988.906	989.173
1969	989.499	988.313	988.409	982.862
1970	994.3	989.833	991.711	987.194
1971	994.964	988.208	991.52	987.94
1972	991.771	991.163	992.466	985.81
1973	988.032	986.364	988.682	986.998
1974	992.169	987.257	993.909	984.049
1975	992.357	989.475	991.626	986.075
1976	995.059	985.002	986.708	984.905
1977	988.766	989.526	990.785	984.617
1978	990.696	989.317	988.911	985.161
1979	994.872	986.982	985.694	985.556
1980	992.119	990.694	988.715	988.244
1981	990.094	989.049	990.767	985.802
1982	996.693	987.239	986.793	984.662
1983	992.302	991.208	987.96	983.919
1984	994.597	987.669	990.839	986.597
1985	990.503	990.53	988.168	983.154
1986	990.855	991.279	988.224	985.11
1987	990.135	989.295	988.164	984.577
1988	988.211	986.734	990.679	989.826
1989	990.816	989.011	987.689	984.834
1990	991.267	990.926	986.552	982.802
1991	994.099	988.706	988.715	987.92
1992	993.889	991.254	991.771	986.39
1993	988.75	988.454	985.739	984.144
1994	987.829	990.34	988.219	988.067
1995	988.808	985.92	991.141	984.373
1996	990.205	987.057	990.713	987.544
1997	989.934	987.144	986.577	986.739
1998	985.438	986.839	984.869	984.588
1999	986.451	986.563	987.082	983.352
2000	993.845	987.852	990.414	987.715
2001	986.742	987.932	985.532	983.904
2002	990.357	989.853	989.523	990.62
2003	990.143	986.651	986.877	986.179
2004	990.807	985.925	987.943	985.513
2005	990.116	987.857	989.519	988.477
2006	989.37	988.185	989.484	985.309
2007	984.615	988.119	989.494	987.292
2008	985.736	988.716	991.212	987.559
2009	992.374	990.2	991.887	985.447
2010	988.721	986.704	986.225	987.19
2011	985.074	988.03	990.646	988.255
2012	988.675	987.313		986.614
2013	988.053	987.051		985.83