Year	Number
1961	338.6901079790724
1962	369.8351477783855
1963	403.4404605595394
1964	441.13470250597277
1965	472.3398925430341
1966	510.6563838379913
1967	541.6559997992119
1968	575.9615262906962
1969	605.0536931158886
1970	631.4777512493375
1971	680.2384531906404
1972	703.8628938872514
1973	727.8906032401387
1974	746.2928198526782
1975	768.2706670331246
1976	790.8990499115341
1977	812.6410218702074
1978	829.4629839805847
1979	852.7997903956283
1980	885.2004110996917
1981	899.9583853516438
1982	915.0543609676388
1983	935.7206810709112
1984	942.3700571659501
1985	952.9422421367601
1986	963.6415184253545
1987	973.0166240717523
1988	990.2003489597848
1989	994.9927235242398
1990	995.566055072345
1991	997.1511189569886
1992	925.7813613647237
1993	914.2987480288689
1994	917.3854689740813
1995	935.4594585362174
1996	930.1746493706507
1997	928.6742184011672
1998	933.1913499344691
1999	934.0747242912036
2000	934.7280272741513
2001	1003.2166990983326
2002	1019.8630761220602
2003	823.697090348632
2004	819.4526887061019
2005	814.6227002624156