Year	Total
1971	222000000
1972	283100000
1973	294100000
1974	298100000
1975	328100000
1976	346100000
1977	347100000
1978	351100000
1979	330100000
1980	318100000
1981	315100000
1982	329100000
1983	365100000
1984	368100000
1985	340100000
1986	367100000
1987	417100000
1988	406100000
1989	468100000
1990	525100000
1991	533100000
1992	536100000
1993	568100000
1994	618100000
1995	754100000
1996	782100000
1997	810100000
1998	848200000
1999	879200000
2000	892200000
2001	1058000000
2002	1103000000
2003	1107000000
2004	1081000000
2005	1107000000
2006	1097000000
2007	1142000000
2008	1032000000