Year	Total
1971	255000000
1972	301100000
1973	337100000
1974	343100000
1975	361100000
1976	393100000
1977	403100000
1978	413100000
1979	445100000
1980	457100000
1981	475100000
1982	499100000
1983	528100000
1984	522100000
1985	560100000
1986	607100000
1987	663100000
1988	655100000
1989	614100000
1990	637100000
1991	673100000
1992	716100000
1993	750100000
1994	789100000
1995	848200000
1996	863200000
1997	937200000
1998	1005000000
1999	1042000000
2000	1118000000
2001	1161000000
2002	1261000000
2003	1341000000
2004	1438000000
2005	1496000000
2006	1534000000
2007	1596000000
2008	1647000000