Year	current US$
1990	187952076.380618
1991	192015278.39723
1992	215068161.377578
1993	196211397.025541
1994	211871930.943543
1995	243693393.433255
1996	251005446.159924
1997	232530498.191933
1998	219770503.185193
1999	214380813.706742
2000	190919254.864935
2001	191755477.375367
2002	212433137.238045
2003	278825748.09303
2004	314560384.986084
2005	336362838.195237
2006	367350800.784621
2007	438390987.175194
2008	493454820.554163
2009	481594898.417382
2010	438306544.941903
2011	429274230.945305
2012	352166977.635699
2013	318413210.338805
2014	284316121.474195
2015	223605062.194425
2016	208632085.796849
2017	210650223.49403
2018	225817961.485205
2019	221597122.896732
2020	218861734.191757
2021	226162027.084802