Year	current US$
1990	163951114.343098
1991	163189889.706155
1992	171869924.569253
1993	190138638.666257
1994	199300563.874684
1995	221204933.52833
1996	243375553.025833
1997	260427460.418859
1998	265346823.02574
1999	264667521.935645
2000	269885827.691219
2001	298477213.284735
2002	312770874.41144
2003	323808521.970866
2004	346380238.9743
2005	370398641.81669
2006	399492542.515867
2007	419262897.271114
2008	465903177.217529
2009	428347074.352629
2010	450964660.504407
2011	468305671.241719
2012	469779130.373172
2013	470334373.191742
2014	441423612.145275
2015	456914852.988652
2016	499170590.84131
2017	528329346.34767
2018	551244939.242499
2019	554593338.110811
2020	530145421.824231
2021	591191152.313307