Year	current US$
1988	259999.9979138369
1989	330000.00193715043
1990	639999.9950081105
1991	5399999.950081106
1992	6129999.989643691
1993	51490001.57415865
1994	32919999.681413192
1995	44790000.97699467
1996	66650001.063942894
1997	37220000.2912432
1998	31189998.935908157
1999	81069999.40238884
2000	61330001.05060638
2001	73520001.7355382
2002	103760000.40583321
2003	62659999.4767458
2004	85839999.93652102
2005	85859998.1609732
2006	77750000.03911562
2007	102029998.22050333
2008	134639999.30582935
2009	131379997.00009827
2010	218780003.92019743
2011	257280006.29507
2012	313620009.6048417
2013	344809998.4657022
2014	304159996.4182826
2015	303020003.31319845
2016	308490000.0616911
2017	273439995.93704945
2018	348489993.0022655
2019	251340000.88833266
2020	220940004.36365652
2021	277309997.1953775
2022	274810005.7579577