Year	Total
1960	47640
1961	155500
1962	208900
1963	295500
1964	307500
1965	336500
1966	507900
1967	657400
1968	1153000
1969	1281000
1970	2006000
1971	3487000
1972	4971000
1973	7667000
1974	10430000
1975	15780000
1976	17420000
1977	22870000
1978	25190000
1979	23260000
1980	22890000
1981	24850000
1982	25770000
1983	26770000
1984	29860000
1985	34970000
1986	37740000
1987	41490000
1988	48030000
1989	48250000
1990	52590000
1991	55840000
1992	56400000
1993	55630000
1994	58380000
1995	61380000
1996	61500000
1997	57300000
1998	61400000
1999	66360000
2000	68590000
2001	68150000
2002	69180000
2003	67740000
2004	69930000
2005	69710000
2006	70180000
2007	71940000
2008	72040000
2009	71390000
2010	72140000
2011	70630000