Year	current US$
1990	121175.989906207
1991	128092.535091174
1992	133959.41119973
1993	140220.235004614
1994	146436.858100429
1995	152871.412251783
1996	159173.023561696
1997	165561.004716376
1998	171191.498726284
1999	177510.075074208
2000	185616.11257993
2001	194068.409157825
2002	201527.614816536
2003	210128.824100904
2004	220624.35378355
2005	232662.457137288
2006	245237.882832606
2007	257532.475562965
2008	268377.390796846
2009	276174.763673235
2010	285782.419553723
2011	298283.863989545
2012	310700.478457986
2013	323253.853273794
2014	336707.562043193
2015	347728.181763705
2016	359115.53480802
2017	374170.919844642
2018	391787.447674214
2019	407789.198646148
2020	411605.394568309
2021	434736.044279055