Year	current US$
1995	8130000000
1996	9519000000
1997	9456000000
1998	8130000000
1999	9258000000
2000	9375000000
2001	9222000000
2002	10044000000
2003	12620000000
2004	15212000000
2005	16750000000
2006	17538000000
2007	21774000000
2008	23986000000
2009	24566000000
2010	28472000000
2011	31582000000
2012	31557000000
2013	30617000000
2014	33569000000
2015	34269000000
2016	37019000000
2017	41747000000
2018	45098000000
2019	45729000000
2020	25667000000