Year	current US$
1995	16358000000
1996	17748000000
1997	17490000000
1998	18819000000
1999	25204000000
2000	22537000000
2001	22611000000
2002	23779000000
2003	28075000000
2004	29469000000
2005	31347000000
2006	32347000000
2007	37898000000
2008	40928000000
2009	36991000000
2010	38297000000
2011	44725000000
2012	39836000000
2013	42183000000
2014	48777000000
2015	39521000000
2016	40436000000
2017	44192000000
2018	49464000000
2019	50507000000
2020	27758000000