Year	current US$
1990	54138771.552143
1991	62132227.1200314
1992	65788363.3056292
1993	67779368.5113016
1994	76146259.5889792
1995	89017650.6769819
1996	95999661.1042927
1997	95022316.2873231
1998	86398308.7106085
1999	80197467.6441841
2000	81875259.9279016
2001	77531631.2910498
2002	76893013.5562403
2003	73296527.5927137
2004	76429315.1674075
2005	84055866.182021
2006	95030162.8172445
2007	114240671.842253
2008	126663080.049771
2009	131157920.139735
2010	141008281.285378
2011	168911455.374031
2012	188108644.258838
2013	205274788.845822
2014	215403593.693984
2015	214079645.03622
2016	219654874.28671
2017	227618377.950721
2018	256315703.350427
2019	264442311.882086
2020	258870995.179017
2021	273118648.991518