Year	current US$
1990	323372553.547246
1991	338966195.201027
1992	223165735.195973
1993	251384674.326981
1994	239701606.506341
1995	255407732.04285
1996	248387652.178989
1997	196900856.589238
1998	195393320.02043
1999	201563357.582127
2000	182529650.884964
2001	106446771.043868
2002	93251077.4248766
2003	73556382.6635225
2004	99929671.0602849
2005	149250907.996403
2006	226189405.413906
2007	214181907.764388
2008	156843311.470947
2009	179647494.3595
2010	148522253.29
2011	165028546.779248
2012	175026196.549655
2013	174634645.098638
2014	209470621.496837
2015	295895522.056234
2016	310850650.809026
2017	246853668.819531
2018	186964533.935825
2019	212968983.939042
2020	304301553.438369
2021	289503292.542621