Year	Total
1971	135300
1972	124400
1973	159800
1974	171000
1975	205800
1976	250000
1977	248400
1978	199800
1979	284200
1980	239300
1981	205500
1982	212600
1983	171000
1984	229400
1985	265800
1986	312100
1987	282400
1988	344600
1989	356000
1990	377200
1991	510000
1992	521000
1993	479100
1994	478200
1995	472900
1996	472900
1997	480900
1998	496600
1999	528600
2000	483900
2001	508100
2002	708000
2003	640400
2004	697200
2005	667900
2006	538500
2007	535400
2008	491900
2009	389400
2010	548100