Year	current US$
1995	9176000000
1996	10073000000
1997	10390000000
1998	11049000000
1999	12024000000
2000	13035000000
2001	12680000000
2002	12744000000
2003	12236000000
2004	15135000000
2005	15891000000
2006	16837000000
2007	17962000000
2008	18190000000
2009	15580000000
2010	18440000000
2011	19994000000