Year	current US$
1995	14530532180.3771
1996	16633406537.8562
1997	21316913729.4164
1998	19211842783.979
1999	21755199192.8695
2000	25892232658.7749
2001	27999951821.7697
2002	32039683746.3158
2003	30879100040.7941
2004	38077891686.5342
2005	40582989215.5119
2006	45882109532.0696
2007	55229150568.4691
2008	65923782122.7165
2009	69755547331.957
2010	87469619938.925
2011	108510412569.998
2012	142848495009.143
2013	172555738213.382
2014	275468935354.332
2015	298189904586.554
2016	300986724382.51
2017	312151207623.821