Year	Total
1960	460100000
1961	501100000
1962	562100000
1963	610100000
1964	712100000
1965	771100000
1966	809100000
1967	957200000
1968	1061000000
1969	1270000000
1970	1480000000
1971	1500000000
1972	1540000000
1973	1391000000
1974	1495000000
1975	1892000000
1976	2316000000
1977	2674000000
1978	2952000000
1979	3202000000
1980	3500000000
1981	3666000000
1982	3847000000
1983	4026000000
1984	4306000000
1985	4980000000
1986	5663000000
1987	6507000000
1988	7613000000
1989	8266000000
1990	9062000000
1991	10830000000
1992	11480000000
1993	12560000000
1994	13450000000
1995	14490000000
1996	16430000000
1997	18520000000
1998	20040000000
1999	22590000000
2000	23890000000
2001	23560000000
2002	23560000000
2003	25200000000
2004	27620000000
2005	30940000000
2006	34470000000
2007	36480000000
2008	39590000000