Year	Total
1960	554100000
1961	631100000
1962	716100000
1963	828100000
1964	958200000
1965	1096000000
1966	1261000000
1967	1415000000
1968	1519000000
1969	1773000000
1970	1990000000
1971	2291000000
1972	2677000000
1973	3071000000
1974	3003000000
1975	3341000000
1976	3750000000
1977	4151000000
1978	4780000000
1979	5129000000
1980	5657000000
1981	5905000000
1982	6314000000
1983	6770000000
1984	7242000000
1985	7686000000
1986	7807000000
1987	8543000000
1988	8770000000
1989	9145000000
1990	9076000000
1991	10020000000
1992	10610000000
1993	10480000000
1994	10930000000
1995	11510000000
1996	12260000000
1997	12430000000
1998	12790000000
1999	13490000000
2000	14210000000
2001	14550000000
2002	15780000000
2003	16450000000
2004	16860000000
2005	16880000000
2006	17680000000
2007	17960000000
2008	18130000000