Year	Total
1960	0
1961	2064
1962	8598
1963	4815
1964	8942
1965	10060
1966	22790
1967	105300
1968	151800
1969	424500
1970	558400
1971	534500
1972	818700
1973	1041000
1974	1243000
1975	2075000
1976	2539000
1977	3547000
1978	3772000
1979	4477000
1980	4780000
1981	5635000
1982	6399000
1983	6712000
1984	8970000
1985	11920000
1986	11220000
1987	12190000
1988	13480000
1989	13900000
1990	13110000
1991	12660000
1992	13650000
1993	13180000
1994	12960000
1995	13160000
1996	13760000
1997	14650000
1998	13900000
1999	14620000
2000	14580000
2001	14730000
2002	14170000
2003	14190000
2004	14370000
2005	14020000
2006	14380000
2007	12080000
2008	12770000
2009	11600000
2010	12090000
2011	9284000