DJF	MAM	JJA	SON
1905	988.624	991.801	991.268	983.146
1906	984.507	987.64	994.997	984.946
1907	985.714	987.32	996.821	987.891
1908	991.17	989.418	991.378	987.22
1909	991.591	988.529	990.447	988.252
1910	990.173	991.863	992.96	985.297
1911	996.389	995.666	991.546	988.05
1912	988.82	985.042	992.561	984.689
1913	988.923	989.045	996.316	984.918
1914	987.671	988.235	994.324	982.949
1915	987.341	992.187	993.864	991.599
1916	985.435	992.199	998.674	988.493
1917	984.193	990.209	992.326	989.242
1918	987.497	992.471	995.225	991.813
1919	988.116	993.472	988.983	983.732
1920	989.983	990.867	994.013	988.324
1921	990.476	993.021	991.45	987.33
1922	989.735	986.306	988.852	987.533
1923	985.681	989.618	996.009	990.962
1924	987.817	990.856	992.388	986.193
1925	998.05	988.057	992.169	985.706
1926	988.518	992.223	995.513	989.015
1927	983.749	990.691	990.905	988.458
1928	991.62	992.514	994.392	988.862
1929	988.537	990.625	989.042	985.475
1930	991.417	986.808	992.022	989.558
1931	988.434	990.985	989.727	987.197
1932	991.233	991.584	994.871	982.984
1933	988.965	989.582	992.436	984.439
1934	985.908	989.732	990.481	985.815
1935	990.879	987.605	996.712	987.454
1936	992.138	989.295	995.905	986.333
1937	987.871	991.782	992.349	984.067
1938	991.689	993.694	988.206	984.689
1939	990.672	991.878	993.604	983.74
1940	986.562	988.222	992.194	988.676
1941	991.442	990.855	993.202	986.536
1942	986.077	990.349	991.329	993.919
1943	984.204	987.933	990.232	986.325
1944	992.689	988.841	992.2	993.711
1945	992	992.726	996.416	986.184
1946	991.746	994.942	994.398	988.271
1947	986.267	989.759	993.628	983.508
1948	989.003	990.524	993.563	987.991
1949	993.444	992.803	990.704	982.741
1950	987.398	994.994	992.437	987.508
1951	991.784	994.061	991.299	991.361
1952	986.842	989.804	996.599	985.963
1953	989.565	990.832	990.573	987.554
1954	992.937	991.599	992.795	987.385
1955	992.839	990.88	992.483	988.295
1956	990.667	997.64	996.794	986.182
1957	993.927	989.474	992.894	989.734
1958	985.338	992.529	992.618	984.586
1959	990.928	988.351	993.897	983.06
1960	992.616	988.532	989.594	984.6
1961	987.106	988.458	992.089	981.862
1962	984.775	992.344	991.22	990.094
1963	990.234	987.484	995.06	988.656
1964	997.204	989.53	994.279	988.975
1965	989.835	991.004	993.649	981.82
1966	991.899	989.147	992.391	985.892
1967	989.078	989.555	995.505	985.491
1968	991.787	988.495	986.149	986.55
1969	986.864	988.654	994.08	983.867
1970	991.764	988.339	995.677	990.901
1971	995.283	992.79	994.749	988.628
1972	990.162	993.062	996.293	987.196
1973	987.222	986.843	995.439	988.998
1974	990.575	991.111	995.18	987.094
1975	990.208	991.153	993.571	987.304
1976	993.319	988.753	985.175	991.157
1977	987.412	988.554	996.458	984.478
1978	987.784	995.622	990.134	986.605
1979	993.65	991.259	988.745	986.898
1980	989.679	992.935	991.811	987.22
1981	986.986	994.294	991.389	985.819
1982	993.152	988.355	993.857	984.066
1983	988.799	995.313	990.686	985.914
1984	992.201	991.684	996.228	989.531
1985	984.555	993.853	991.693	988.399
1986	988.24	993.716	985.246	984.992
1987	989.137	990.068	995.127	984.879
1988	986.877	991.46	992.699	990.07
1989	990.556	989.687	992.649	985.757
1990	987.549	991.745	987.162	981.986
1991	991.009	990.424	987.451	989.877
1992	994.072	995.754	994.768	989.165
1993	985.684	989.663	991.685	983.87
1994	989.038	992.67	995.379	987.386
1995	989.857	989.857	989.436	986.248
1996	988.805	987.844	988.986	989.103
1997	991.167	989.662	994.058	988.376
1998	984.714	991.953	986.894	984.978
1999	985.785	991.255	991.206	985.811
2000	991.745	994.92	998.625	991.731
2001	986.574	992.203	988.45	986.569
2002	989.618	991.285	993.235	993.522
2003	989.785	991.617	991.676	987.355
2004	988.779	989.944	991.308	987.348
2005	991.552	989.706	994.258	991.837
2006	989.015	990.521	997.077	987.162
2007	987.699	990.599	990.223	992.418
2008	983.335	992.888	996.371	990.034
2009	994.429	990.068	994.713	987.567
2010	987.73	987.691	991.747	990.573
2011		990.142	997.262	990.493
2012		992.976	987.799	
2013		993.099	988.41