Year	current US$
1995	590000000
1996	529000000
1997	526000000
1998	260000000
1999	252000000
2000	359000000
2001	362000000
2002	335000000
2003	449000000
2004	503000000
2005	1051000000
2006	1307000000
2007	1610000000
2008	1992000000
2009	1230000000
2010	1136000000
2011	1419000000
2012	1466000000
2013	1849000000
2014	1987000000
2015	1841000000
2016	2032000000
2017	3079000000
2018	3388000000
2019	3572000000
2020	1433000000