Year	Total
1971	614.2
1972	628.5
1973	642.6
1974	651.6
1975	667.7
1976	683.3
1977	705.6
1978	724.7
1979	731.9
1980	750.7
1981	772.2
1982	796.8
1983	816.7
1984	844.2
1985	873.3
1986	902.2
1987	949.7
1988	978.4
1989	1010
1990	1054
1991	1114
1992	1165
1993	1230
1994	1281
1995	1357
1996	1422
1997	1481
1998	1553
1999	1721
2000	1765
2001	1804
2002	1851
2003	1899
2004	1942
2005	2001
2006	2039
2007	2099
2008	2138
2009	2191