Year	current US$
1995	1136000000
1996	1546000000
1997	2341000000
1998	1418000000
1999	2578000000
2000	2156000000
2001	1742000000
2002	1761000000
2003	1544000000
2004	2017000000
2005	2287000000
2006	3542000000
2007	4961000000
2008	2563000000
2009	2370000000
2010	2645000000
2011	3198000000
2012	4061000000
2013	4690000000
2014	5030000000
2015	5272000000
2016	5143000000
2017	6988000000
2018	8240000000
2019	9781000000
2020	2010000000