Year	current US$
1995	2099000000
1996	2292000000
1997	2070000000
1998	2329000000
1999	2261000000
2000	2228000000
2001	2114000000
2002	2127000000
2003	2410000000
2004	2764000000
2005	3049000000
2006	3342000000
2007	3938000000
2008	4329000000
2009	3780000000
2010	3905000000
2011	4146000000
2012	3783000000
2013	3902000000
2014	4151000000
2015	3695000000
2016	3934000000
2017	4601000000
2018	5396000000
2019	5729000000
2020	3140000000