Year	current US$
1980	38470804.9611282
1981	19372648.2734479
1982	18705837.9354695
1983	27946069.7598982
1984	36100897.2268569
1985	45837386.6976004
1986	53968196.8412067
1987	67082503.0548484
1988	74463048.0354953
1989	60578820.2818711
1990	93044155.4772224
1991	99603579.043896
1992	124768847.362043
1993	121128632.028652
1994	57291007.7611544
1995	64080804.8597528
1996	85554784.9270692
1997	141599339.621418
1998	85429256.8248873
1999	140490757.559135
2000	-79303323.3526219
2005	99828426.1179614
2006	3073073522.88247
2007	4395343655.46726
2008	6061088437.73812
2009	4774727014.49769
2010	2497127734.79237
2011	4834625235.22031
2012	5048084606.45434
2013	6414033563.59673
2014	6820270088.82068
2015	5588954925.78089
2016	4842453709.81924
2017	4475490550.66543
2018	4869805056.31619
2019	3935862767.232
2020	3851081314.59122
2021	4765088216.71153