Year	Total
1971	129000000
1972	141000000
1973	153000000
1974	159000000
1975	166000000
1976	175000000
1977	181000000
1978	183000000
1979	202000000
1980	208000000
1981	220000000
1982	215000000
1983	211000000
1984	222000000
1985	240000000
1986	277000000
1987	289100000
1988	328100000
1989	338100000
1990	446100000
1991	448100000
1992	553100000
1993	545100000
1994	585100000
1995	660100000
1996	927200000
1997	1023000000
1998	1059000000
1999	1126000000
2000	1192000000
2001	1048000000
2002	1120000000
2003	1058000000
2004	1163000000
2005	900200000
2006	871200000
2007	1420000000
2008	1501000000