Year	Total
1971	244100
1972	308100
1973	388500
1974	434800
1975	364600
1976	443900
1977	475300
1978	437000
1979	497400
1980	533600
1981	531100
1982	361300
1983	283900
1984	264300
1985	200700
1986	285800
1987	248500
1988	297500
1989	299500
1990	370200
1991	465700
1992	479500
1993	472900
1994	464300
1995	467300
1996	471700
1997	467400
1998	481500
1999	445400
2000	479300
2001	470200
2002	440400
2003	515200
2004	552900
2005	580600
2006	576000
2007	554500
2008	579300
2009	528400