Year	Total
1971	257000000
1972	258000000
1973	313100000
1974	336100000
1975	367100000
1976	401100000
1977	448100000
1978	505100000
1979	552100000
1980	384100000
1981	383100000
1982	400100000
1983	437100000
1984	461100000
1985	477100000
1986	511100000
1987	552100000
1988	592100000
1989	620100000
1990	651100000
1991	707100000
1992	750100000
1993	839200000
1994	912200000
1995	1005000000
1996	1058000000
1997	1149000000
1998	1199000000
1999	1365000000
2000	1316000000
2001	1336000000
2002	1373000000
2003	1322000000
2004	1749000000
2005	1535000000
2006	1586000000
2007	1624000000
2008	1807000000