Year	current US$
1990	6058799.49531034
1991	6532719.28964986
1992	6965889.38238594
1993	7431672.45524455
1994	7907590.33742318
1995	8713670.49835163
1996	10027900.4843868
1997	11423709.3254299
1998	13010553.9031976
1999	15798396.6816045
2000	17447914.5825134
2001	18824635.688309
2002	19346651.0223875
2003	21853397.3933777
2004	23386180.7613555
2005	24662219.6764908
2006	30409498.3848254
2007	36312079.0064089
2008	45624158.7349664
2009	47778235.7101581
2010	65444174.4504206
2011	73377833.3194131
2012	91345944.4862312
2013	101178462.035559
2014	107073009.370769
2015	128659431.786431
2016	132872752.561301
2017	159770985.631147
2018	182964745.14254
2019	203894603.880474
2020	222067206.482236
2021	261648962.385778