Year	Total
1960	16300000000
1961	19200000000
1962	22900000000
1963	26900000000
1964	31410000000
1965	35910000000
1966	40910000000
1967	47010000000
1968	51710000000
1969	63310000000
1970	70810000000
1971	62470000000
1972	70430000000
1973	79210000000
1974	78890000000
1975	88020000000
1976	94920000000
1977	101500000000
1978	111200000000
1979	115800000000
1980	116100000000
1981	121300000000
1982	127700000000
1983	137300000000
1984	142200000000
1985	147600000000
1986	150600000000
1987	159700000000
1988	166600000000
1989	176700000000
1990	184200000000
1991	191900000000
1992	198500000000
1993	204100000000
1994	220700000000
1995	229900000000
1996	232900000000
1997	236500000000
1998	244600000000
1999	251700000000
2000	257900000000
2001	257200000000
2002	265900000000
2003	261600000000
2004	274000000000
2005	283100000000
2006	279600000000
2007	291100000000
2008	287700000000