Year	current US$
1990	1211759.89906207
1991	1280925.35091174
1992	1473553.52319703
1993	1542422.58505076
1994	1610805.43910472
1995	1834456.9470214
1996	2228422.32986374
1997	2483415.07074564
1998	2739063.97962054
1999	3372691.42640996
2000	4083554.47675847
2001	4657641.8197878
2002	5642773.36501279
2003	6513993.74282576
2004	7280604.12689655
2005	10237148.2873877
2006	12261894.415705
2007	11846494.355588
2008	12882114.7582486
2009	14084912.9987766
2010	15432251.6140613
2011	17002180.4140832
2012	16467124.837421
2013	16485946.5771742
2014	16835378.4784597
2015	17386409.4768018
2016	19751355.2840174
2017	22076083.7829705
2018	23899035.4027686
2019	26506297.5322163
2020	23220343.2160952
2021	26333621.346399