Year	Total
1971	116000000
1972	125000000
1973	131000000
1974	146000000
1975	148000000
1976	183000000
1977	214000000
1978	236000000
1979	259000000
1980	272000000
1981	265000000
1982	320100000
1983	341100000
1984	374100000
1985	409100000
1986	437100000
1987	481100000
1988	500100000
1989	571100000
1990	628100000
1991	658100000
1992	766100000
1993	883200000
1994	980200000
1995	1026000000
1996	1054000000
1997	1207000000
1998	1132000000
1999	1106000000
2000	1296000000
2001	1245000000
2002	1431000000
2003	1612000000
2004	1662000000
2005	1463000000
2006	1703000000
2007	1549000000
2008	1829000000