Year	current US$
1977	117506590.032971
1978	119348843.754466
1979	133190037.22999
1980	178550392.681836
1981	146766597.434172
1982	122973835.244329
1983	127770416.268629
1984	141646266.446973
1985	143272920.502646
1986	130516082.13502
1987	143611127.145876
1988	197868205.6416
1989	231271756.090799
1990	268424977.509101
1991	356471139.054244
1992	338830607.938772
1993	260063058.667122
1994	147718769.905928
1995	151417175.87698
1996	185744507.396778
1997	219195757.768328
1998	161548564.897035
1999	184716381.596941
2000	167120566.831956
2001	171408706.23107
2002	221893892.129974
2003	135516505.4178166
2004	135148232.1572669
2005	140350467.6086154
2006	141911641.1827806
2007	140606617.64995497
2008	162362598.5991186
2009	198429052.0997743
2010	204625228.0825746
2011	224702376.5134246
2012	202643257.6906383
2013	220464631.3308561
2014	245563628.31703103
2015	266333078.627851
2016	226069945.909698
2017	339533015.880096
2018	370847294.351358
2019	442282667.0521044
2020	570832171.7256637
2021	576178295.1850363
2022	650470199.908765