Year	constant 2011 international $
1990	19174383377.5745
1991	17964569063.7014
1992	18177656210.4238
1993	18558761646.6129
1994	18545472040.9712
1995	18863010056.7757
1996	19268360118.4349
1997	19980035574.7513
1998	20765717794.95
1999	21733216613.0394
2000	22767731871.9076
2001	24137853996.5255
2002	21078673520.3615
2003	23141198987.0447
2004	24357732651.851
2005	25478894719.5946
2006	26758599469.8959
2007	28428490862.2468
2008	30455019682.2432
2009	29232597651.7321
2010	29309511789.5579
2011	29735787033.419
2012	30636040392.1695
2013	31326945612.8668
2014	32365701443.6014
2015	33374415657.1567
2016	34769462972.8369
2017	36266941943.1325
2018	38148368885.8854