Year	current US$
1990	11390543.0511834
1991	12553068.438935
1992	13529900.5311727
1993	14723124.6754845
1994	15668743.8167459
1995	17885955.2334586
1996	19578281.8980886
1997	20364003.5801142
1998	21227745.8420592
1999	23076309.7596471
2000	23573246.2976511
2001	27169577.2820955
2002	31236780.0338009
2003	31099067.0628411
2004	36182394.5136363
2005	35132031.5911084
2006	42426155.1460935
2007	51248964.0281356
2008	50991704.7512925
2009	64901068.2800544
2010	68587784.9513835
2011	73377833.3194131
2012	84821233.1075466
2013	83722747.0947518
2014	97645198.3861598
2015	123791233.485112
2016	117071666.621691
2017	130585654.301434
2018	144569573.664993
2019	161076739.010065
2020	167728256.882405
2021	186304338.254287