Year	Total
1971	43360
1972	45060
1973	47280
1974	55230
1975	63030
1976	67910
1977	79150
1978	95010
1979	113600
1980	147000
1981	171200
1982	195600
1983	193200
1984	195200
1985	192800
1986	182100
1987	190900
1988	190100
1989	190500
1990	194700
1991	202100
1992	201700
1993	203200
1994	203700
1995	201600
1996	212000
1997	220100
1998	224100
1999	220600
2000	222300
2001	225800
2002	225500
2003	236700
2004	246900
2005	254000
2006	250600
2007	244100
2008	233300
2009	220000
2010	217700