Year	Total
1971	44880
1972	38010
1973	42300
1974	48320
1975	24590
1976	16850
1977	35340
1978	57270
1979	88650
1980	81340
1981	46950
1982	38870
1983	69050
1984	74720
1985	100700
1986	105800
1987	97510
1988	112000
1989	122500
1990	141700
1991	109000
1992	121800
1993	130500
1994	124500
1995	126500
1996	161900
1997	122900
1998	134700
1999	151900
2000	101000
2001	100100
2002	97940
2003	126100
2004	119300
2005	143500
2006	168700
2007	149500
2008	175200
2009	129400
2010	179200