Year	Total
1971	111500
1972	127200
1973	139900
1974	150900
1975	128200
1976	144000
1977	146300
1978	137300
1979	159200
1980	148500
1981	118900
1982	112900
1983	111900
1984	121200
1985	128400
1986	127900
1987	123300
1988	131800
1989	147500
1990	150500
1991	156700
1992	162000
1993	164900
1994	166200
1995	169200
1996	182000
1997	193900
1998	188600
1999	187700
2000	201700
2001	211200
2002	196100
2003	216400
2004	229900
2005	233300
2006	235000
2007	231300
2008	228200
2009	228700