Year	Total
1990	986200000
1991	960200000
1992	1687000000
1993	2546000000
1994	1876000000
1995	1910000000
1996	1701000000
1997	1585000000
1998	1608000000
1999	1943000000
2000	2351000000
2001	1814000000
2002	1719000000
2003	2415000000
2004	2490000000
2005	2950000000
2006	3258000000
2007	2815000000
2008	2294000000