Year	current US$
1990	25856862.8745631
1991	22308211.8483403
1992	17286029.1425621
1993	13342548.3282937
1994	11152421.5915764
1995	11165991.4228644
1996	10769071.8304456
1997	16558297.4684757
1998	10491501.2056936
1999	9132202.34487232
2000	8662483.857411
2001	7840079.55338585
2002	8012240.6888528
2003	14718444.7135492
2004	17134910.9768934
2005	18283122.4080999
2006	19662580.342045
2007	15549449.8808051
2008	42431706.0797657
2009	67788579.3211887
2010	81636368.3627298
2011	111952120.714476
2012	103503168.551357
2013	83084221.8964189
2014	131231613.482635
2015	71439738.9842573
2016	49880620.5176772
2017	68481234.3549047
2018	57922969.9958448
2019	95556581.8964555
2020	104742907.8785
2021	89573871.3002515
2022	78185060.4461544