Year	current US$
1990	390618040.633549
1991	375848135.03476
1992	397795585.711394
1993	393658133.718837
1994	293928065.852695
1995	356269387.918354
1996	537087988.255609
1997	494321332.381458
1998	528503306.529263
1999	512631011.648105
2000	458055620.909516
2001	475834910.493403
2002	514379625.709985
2003	613577601.614298
2004	637878512.894843
2005	625897394.952736
2006	632151154.907329
2007	695595153.064172
2008	767483796.953035
2009	722894772.223134
2010	688711716.21817
2011	731684056.539124
2012	668107718.361354
2013	721202983.705971
2014	754564710.723651
2015	656351925.193845
2016	629566303.629506
2017	609804817.762581
2018	650864735.828066
2019	615924195.823272
2020	625335721.109338
2021	657134604.644195