Year	current US$
1995	2684000000
1996	3204000000
1997	3727000000
1998	2565000000
1999	3903000000
2000	4345000000
2001	3800000000
2002	3764000000
2003	4584000000
2004	6125000000
2005	6851000000
2006	7591000000
2007	9303000000
2008	10985000000
2009	10755000000
2010	12528000000
2011	8707000000
2012	9940000000
2013	6047000000
2014	7208000000
2015	6065000000
2016	2645000000
2017	7775000000
2018	11615000000
2019	13030000000
2020	4398000000