Year	current US$
1990	27991653.6683338
1991	28308450.2551494
1992	29069192.2303413
1993	39401886.0362966
1994	36755651.3832078
1995	36383396.1159244
1996	36928141.4663135
1997	40893568.1649449
1998	40572385.1981292
1999	42779928.0928842
2000	39536231.9795251
2001	48323033.8802984
2002	46754406.3371369
2003	54843622.1118475
2004	57362331.1618334
2005	61190230.2574255
2006	64988042.7420072
2007	70048835.6556462
2008	72998652.696223
2009	69319866.9680211
2010	74017645.8659474
2011	76658952.7675147
2012	84510532.9184509
2013	76611161.2389353
2014	79462982.886127
2015	57722878.3023139
2016	48480599.1389067
2017	56873980.3739436
2018	60727053.8786704
2019	67693007.127174
2020	55983011.5575067
2021	57456204.0873553