Year	Total
1960	0
1961	0
1962	0
1963	7997
1964	12980
1965	11010
1966	14790
1967	13160
1968	78930
1969	45490
1970	89170
1971	366900
1972	620000
1973	1312000
1974	1264000
1975	1081000
1976	1498000
1977	2265000
1978	2683000
1979	3033000
1980	3270000
1981	3445000
1982	3296000
1983	4180000
1984	4489000
1985	5204000
1986	6128000
1987	6643000
1988	7125000
1989	6868000
1990	6274000
1991	7303000
1992	6929000
1993	8077000
1994	9272000
1995	8413000
1996	7977000
1997	7096000
1998	6149000
1999	6319000
2000	6260000
2001	6595000
2002	6494000
2003	6440000
2004	7772000
2005	7914000
2006	8423000
2007	8039000
2008	8078000
2009	7747000
2010	7795000
2011	7819000