Year	Total
1960	974200000
1961	1021000000
1962	1154000000
1963	1206000000
1964	1317000000
1965	1409000000
1966	1497000000
1967	1583000000
1968	1791000000
1969	1904000000
1970	2127000000
1971	2291000000
1972	2453000000
1973	2590000000
1974	2712000000
1975	2618000000
1976	2847000000
1977	3050000000
1978	3284000000
1979	3653000000
1980	3596000000
1981	3560000000
1982	3608000000
1983	3698000000
1984	3756000000
1985	3958000000
1986	4069000000
1987	4233000000
1988	4208000000
1989	4331000000
1990	4143000000
1991	4352000000
1992	4607000000
1993	4687000000
1994	4831000000
1995	4961000000
1996	5220000000
1997	5326000000
1998	5512000000
1999	6010000000
2000	6376000000
2001	6729000000
2002	6580000000
2003	6967000000
2004	7347000000
2005	7513000000
2006	8084000000
2007	8064000000
2008	8528000000