Year	constant 2010 US$
1990	32406543391.6931
1991	32017666306.6662
1992	28943969894.2669
1993	26744227649.0937
1994	23615151971.7791
1995	21159176050.6458
1996	21751633964.0797
1997	24231321411.7377
1998	26266750331.3539
1999	27159819622.8275
2000	28735090095.2695
2001	30092911029.8867
2002	31611178883.8695
2003	33837615082.7504
2004	37711935082.718
2005	41256857555.0639
2006	45382541170.3599
2007	49285442677.3264
2008	54312557554.1902
2009	54421180122.0475
2010	58665088956.0255
2011	61820512466.141
2012	62863508300.7594
2013	63494325276.0969
2014	64590481690.9209
2015	62116943620.6317
2016	60547592312.6721
2017	62080768455.0003
2018	63974173257.5273