Year	Total
1971	186600
1972	180100
1973	221000
1974	178800
1975	210900
1976	254000
1977	303400
1978	250100
1979	284700
1980	319300
1981	311100
1982	262300
1983	288100
1984	280300
1985	192300
1986	200000
1987	218200
1988	223200
1989	231400
1990	161500
1991	209900
1992	177400
1993	167000
1994	126200
1995	199000
1996	251000
1997	236800
1998	266300
1999	236700
2000	229800
2001	149400
2002	188700
2003	260400
2004	272400
2005	372900
2006	364400
2007	247100
2008	242800
2009	298400
2010	434800