Year	constant 2010 US$
1988	6627378527.89394
1989	6422909423.39914
1990	6493789565.2455
1991	6630876372.87927
1992	6273178307.70016
1993	5948867022.14337
1994	5254884066.73415
1995	5799193614.15495
1996	6055064352.73284
1997	6209978034.92152
1998	6335782419.25143
1999	6496211973.517
2000	6579415526.5221
2001	6477621479.85466
2002	6421452870.5337
2003	6433352476.86038
2004	6223459031.48822
2005	6283987565.49498
2006	6515242267.80922
2007	6733065201.58951
2008	6794660747.34177
2009	7016359189.85827
2010	6644821528.86657
2011	7029350121.50152
2012	7251148024.04474
2013	7523013859.53641
2014	7755524894.94748
2015	7840163139.97032
2016	7969587717.63888
2017	8065218211.35551
2018	8172200721.34971