Year	current US$
1989	63970099.0298636
1990	64960582.7702149
1991	89935835.5312559
1992	114237930.865031
1993	152278084.645553
1994	198330283.156675
1995	256426706.253793
1996	281782010.659284
1997	405556779.104989
1998	369174646.684126
1999	336353726.752325
2000	298883202.321725
2001	483333159.20398
2002	471671957.194029
2003	434964265.793533
2004	531013843.592239
2005	532482912.474295
2006	572079134.169791
2007	595836337.841578
2008	496470174.574169
2009	555747350.272253
2010	553857088.817897
2011	567534910.245074
2012	784245889.333194
2013	979894561.682986
2014	997875905.013532
2015	1037837221.58109
2016	1056919874.18169
2017	1109187473.63841
2018	1129568114.08279
2019	1061686595.13513
2020	644009693.329718
2021	466870745.895364