Year	current US$
1990	77561387.8271922
1991	71631015.953823
1992	71231371.2888761
1993	65393128.8624444
1994	60240790.709907
1995	65417761.4933544
1996	61948770.6342571
1997	64261373.6697688
1998	63723347.2938137
1999	67326604.3443248
2000	68536419.4705223
2001	70726052.6403119
2002	70469542.7878469
2003	72382622.7710682
2004	76361660.8177231
2005	81481713.4869879
2006	88207440.9795187
2007	97370275.1479311
2008	107845684.705292
2009	120769222.025232
2010	128223757.539609
2011	142240569.668651
2012	140813167.985993
2013	143330349.329874
2014	146887858.883389
2015	152407232.12059
2016	141298553.503762
2017	147025492.646715
2018	140185284.264442
2019	142533078.106446
2020	149878559.638115
2021	160593189.523805