Year	current US$
1990	2059991.82840552
1991	2818035.77200582
1992	2411269.40159513
1993	2664184.46508767
1994	2782300.30390816
1995	3057428.24503566
1996	3342633.49479562
1997	3476781.0990439
1998	3766212.97197824
1999	4082731.72670679
2000	4826018.92707819
2001	3881368.1831565
2002	4232079.87360981
2003	3362061.18561446
2004	3309365.51222569
2005	3489937.07374311
2006	4414282.1650616
2007	4635584.84794833
2008	4830793.33427833
2009	4971146.05476758
2010	8573473.11892295
2011	10738219.77034
2012	11495918.1080528
2013	12606900.0970458
2014	12794887.4830747
2015	13909127.7887036
2016	15801083.7991148
2017	19831058.1245131
2018	27033334.4003535
2019	29360824.1254825
2020	32854739.9976851
2021	38476262.5604815