Year	constant 2010 US$
1977	322802895.238522
1978	336953373.083558
1979	364178347.531993
1980	393900511.3434
1981	408927485.626788
1982	408583936.388601
1983	430500445.224182
1984	474260796.516996
1985	510512312.91626
1986	569189722.967959
1987	606906333.449014
1988	638546016.85925
1989	672084207.470226
1990	692325009.071933
1991	707396047.776794
1992	715590002.022208
1993	753373665.688466
1994	803670361.916
1995	768634400.789226
1996	819401304.725953
1997	864231831.157892
1998	905121350.289817
1999	938682296.128043
2000	1001496497.16983
2001	951881612.473067
2002	961629840.268185
2003	1019884496.57692
2004	1078389764.69155
2005	1147540485.65063
2006	1293605261.82583
2007	1413385613.40099
2008	1412959714.1241
2009	1241885105.44827
2010	1152469074.07407
2011	1128507777.84862
2012	1168080135.6583
2013	1166866912.80811
2014	1221221060.55215
2015	1270384206.28814
2016	1341395390.63876
2017	1382074629.24002
2018	1450219904.50286