Year	current US$
1983	61084843.51413907
1984	73526151.36551446
1985	74383205.0701675
1986	76216892.67436214
1987	77961565.42162423
1988	94593300.51902783
1989	89786456.6277727
1990	100111054.1602597
1991	118239613.18051575
1992	121463595.31536616
1993	113660851.61332774
1994	128052918.68905975
1995	139691912.4795961
1996	143950447.1038946
1997	150081988.43531543
1998	199784343.32542592
1999	212380398.99283364
2000	193965079.2966485
2001	197347096.77419356
2002	188457716.65958098
2003	220215921.4327077
2004	252115573.84381428
2005	265218353.91195193
2006	276914039.50293833
2007	313508236.72971326
2008	344493876.3842604
2009	363028832.6492637
2010	429592303.28271365
2011	488246414.54413
2012	489952772.905141
2013	502377237.75021815
2014	529958963.2060197
2015	500453407.4473659
2016	523825766.3056004
2017	545024540.8510246
2018	539281986.1117414
2019	519974723.8140893