Year	Total
1971	1255
1972	1294
1973	1331
1974	1392
1975	1560
1976	1900
1977	1964
1978	2094
1979	2055
1980	1912
1981	2148
1982	2250
1983	2140
1984	2183
1985	2008
1986	1651
1987	1799
1988	1642
1989	1655
1990	1692
1991	1718
1992	1748
1993	1734
1994	1753
1995	1791
1996	1822
1997	1851
1998	1850
1999	2003
2000	2119
2001	2285
2002	2321
2003	2395
2004	2392
2005	2489
2006	2631
2007	2900
2008	3110
2009	3164