Year	Total
1971	60190
1972	77390
1973	96900
1974	111800
1975	137600
1976	163400
1977	189200
1978	206400
1979	232200
1980	253700
1981	262300
1982	268700
1983	275200
1984	235500
1985	183100
1986	349200
1987	288000
1988	252700
1989	264700
1990	244900
1991	302500
1992	277400
1993	285000
1994	324200
1995	361500
1996	492300
1997	432300
1998	423100
1999	454300
2000	395000
2001	305700
2002	302000
2003	420000
2004	470000
2005	462000
2006	467000
2007	239700
2008	326500
2009	447600
2010	651700