Year	constant 2010 US$
1988	49170883223.5908
1989	50030636682.5558
1990	51432563689.938
1991	53191449738.0658
1992	51670759361.3654
1993	54238310382.0008
1994	53844661560.4462
1995	56498610694.7072
1996	60373678224.1517
1997	61699488537.4431
1998	62672612004.5032
1999	65231847611.377
2000	65178819601.0321
2001	68007917112.7766
2002	69640230438.1205
2003	70225757223.7569
2004	71851628394.3411
2005	75822622704.7235
2006	78535654356.5494
2007	82126319454.4409
2008	85786635441.0335
2009	89959444676.1208
2010	94204963507.1765
2011	95706008178.6882
2012	101012964970.123
2013	103379390092.628
2014	108089476406.652
2015	110974430614.322
2016	113678959905.113
2017	118353477816.911
2018	122074137058.8