Year	current US$
1980	7048508.312457299
1981	8349804.6426108945
1982	8798052.54082564
1983	8719819.81981982
1984	8857393.59368144
1985	9414065.228018716
1986	10544786.096256685
1987	12847640.38650049
1988	17732205.41741434
1989	16502185.141040923
1990	18121623.707362246
1991	22216566.40444239
1992	19297750.723777004
1993	22713150.289017342
1994	26077109.52885926
1995	27927452.986072864
1996	29235327.542820033
1997	29465769.687376335
1998	24193029.490616623
1999	23406141.347922318
2000	25368050.56893715
2001	22607535.16380824
2002	25574309.120177925
2003	30025497.562290933
2004	31186882.94439613
2005	37323210.82623287
2006	44878416.65380728
2007	47761933.34285397
2008	58292595.156874426
2009	40753742.87169092
2010	43754578.28933078
2011	49889277.462437026
2012	59589411.25661678
2013	57908388.23767587
2014	59427083.18963971
2015	62306071.59435833
2016	64653368.236639
2017	74407866.37370433
2018	83472210.57314667
2019	82120921.61776966
2020	80034300.84752181
2021	84903080.22906913