1950	0	0
1951	0	0
1952	0	0
1953	0	0
1954	0	0
1955	0	0
1956	0	0
1957	0	0
1958	0	0
1959	0	0
1960	35638	47159
1961	39512	47458
1962	44662	47535
1963	46027	48827
1964	48682	49734
1965	49863	50324
1966	50815	50752
1967	51393	51581
1968	55222	51917
1969	57494	51549
1970	61300	51842
1971	65900	54275
1972	73500	57579
1973	70200	60798
1974	80900	63349
1975	119300	67464
1976	122300	71853
1977	118600	76602
1978	119400	80546
1979	127300	79515
1980	172100	72217
1981	195300	67837
1982	256100	67719
1983	277500	70466
1984	303200	73058
1985	313800	78073
1986	321100	90594
1987	281300	99236
1988	301200	107624
1989	325600	115316
1990	412900	124118
1991	454900	135924
1992	515600	154955
1993	553400	168155
1994	554400	177786
1995	575200	181918
1996	585700	182442