Year	constant 2010 US$
1990	9619059425.70015
1991	13312541316.2852
1992	20077965805.2405
1993	23452902736.8491
1994	25534034068.0597
1995	26874715744.942
1996	28473737813.3333
1997	27526942980.3648
1998	28165835083.9801
1999	27336743135.2571
2000	27404189215.4561
2001	28810575179.7015
2002	29557789019.5688
2003	30552415892.67
2004	32312138198.2753
2005	31802195504.1459
2006	31634661430.0498
2007	35080142762.1891
2008	39210096746.136
2009	44784514225.2736
2010	47809959847.8275
2011	47329312383.7479
2012	49394826115.5556
2013	50793467089.2206
2014	53039376907.1973
2015	53635698742.4876
2016	57037308599.602
2017	59106515964.9088
2018	58008119402.9851