Year	Total
1971	16360
1972	12070
1973	9836
1974	8831
1975	13250
1976	18370
1977	23110
1978	27700
1979	29010
1980	33480
1981	36160
1982	37580
1983	40810
1984	46960
1985	51210
1986	47870
1987	53280
1988	51690
1989	53590
1990	54870
1991	55530
1992	56560
1993	59780
1994	59200
1995	59810
1996	58670
1997	57690
1998	57200
1999	59320
2000	56450
2001	57000
2002	60880
2003	64430
2004	64660
2005	76910
2006	79740
2007	82280
2008	87490
2009	88190