Year	current US$
1990	13571710.8694952
1991	12040698.2985703
1992	14735535.2319703
1993	18088410.3155952
1994	16108054.3910472
1995	17885955.2334586
1996	18464070.7331567
1997	21357369.6084125
1998	21227745.8420592
1999	21833739.2341276
2000	26543104.09893
2001	27363645.6912533
2002	31639837.2904561
2003	39924476.9705672
2004	42139251.7781306
2005	39785281.9472834
2006	45614247.5772381
2007	57429743.8254002
2008	60116537.1381473
2009	68767517.95509
2010	76589692.0601143
2011	99925093.825341
2012	114337780.702337
2013	135766615.244036
2014	163639883.306159
2015	191945959.960653
2016	261436122.718335
2017	269777240.665327
2018	272292274.747033
2019	305841905.82071
2020	333599799.741245
2021	389000107.072306