Year	current US$
1995	2550000000
1996	2975000000
1997	3153000000
1998	3353000000
1999	3175000000
2000	3195000000
2001	2756000000
2002	1716000000
2003	2306000000
2004	2660000000
2005	3209000000
2006	3926000000
2007	5030000000
2008	5273000000
2009	4455000000
2010	5605000000
2011	6058000000
2012	5665000000
2013	5199000000
2014	5645000000
2015	5441000000
2016	5466000000
2017	5830000000
2018	5999000000
2019	5654000000
2020	1702000000