Year	constant 2015 US$
1978	206261131.657218
1979	206261131.657218
1980	239708574.13371018
1981	287212926.7362875
1982	306064851.1925759
1983	402541669.0882355
1984	426938133.6203355
1985	467968552.0687685
1986	439136476.9661088
1987	442274528.17859024
1988	470973642.1104644
1989	476839999.3319748
1990	506527796.5816308
1991	524762797.27177835
1992	498524657.4081894
1993	489551213.10750204
1994	403879751.5684778
1995	426088633.9191631
1996	429923431.7838847
1997	349312788.5406218
1998	356425491.80121225
1999	334499488.18104595
2000	378780849.0578968
2001	468299283.5163633
2002	547942018.8724445
2003	602895506.3153148
2004	653866857.0690049
2005	707227489.5846069
2006	786763339.0116034
2007	808629124.3387492
2008	823318144.0368094
2009	892854376.3129315
2010	972470780.553974
2011	1027220059.3103216
2012	961314079.0734872
2013	1132589552.354673
2014	1121365899.5522988
2015	1040498809.6465316
2016	1152512035.0334675
2017	1096655561.5874367
2018	997995265.9029926
2019	973311621.0372052
2020	980116021.4565469