Year	constant 2010 US$
1997	199547004086.98
1998	207168395101.905
1999	213343749165.517
2000	222981769690.44
2001	231377404173.229
2002	241345401670.84
2003	252473611766.581
2004	273183751090.075
2005	288316552354.477
2006	317225863813.2
2007	344050246092.747
2008	365484214240.305
2009	368471300391.466
2010	394373376444.373
2011	420188179792.233
2012	433940430644.367
2013	445832759281.413
2014	457211827320.565
2015	468974844808.579
2016	477304886499.379
2017	486583356706.849
2018	496869652224.255