Year	Number
1961	4690000
1962	4730000
1963	4755000
1964	4783000
1965	4800000
1966	5470000
1967	5450000
1968	5390000
1969	5305000
1970	5270000
1971	5235000
1972	5205000
1973	5180000
1974	5155000
1975	5120000
1976	5090000
1977	5050000
1978	4989000
1979	4880000
1980	4726000
1981	4697000
1982	4669000
1983	4671000
1984	4676000
1985	4670000
1986	4730000
1987	4789000
1988	4548492
1989	4487595
1990	4426699
1991	4365802
1992	4304906
1993	4317974
1994	4331042
1995	4344109
1996	4357177
1997	4370245
1998	4414705
1999	4459165
2000	4503625
2001	4548085
2002	4592545
2003	4551998
2004	4511452
2005	4470905
2006	4430359
2007	4389812