Year	current US$
1990	815353.885351302
1991	871516.653666933
1992	949905.11881249
1993	907689.608821051
1994	1019731.30585876
1995	1109142.76287019
1996	1204850.50324657
1997	1269660.25837211
1998	1302934.51958131
1999	1337989.77398605
2000	1509070.92222053
2001	1387382.54394931
2002	1842154.17727053
2003	2009590.86088125
2004	2416805.6431349
2005	2156015.96583728
2006	2152386.4094038
2007	2611854.83511038
2008	2925807.05113355
2009	2586590.62368368
2010	2968041.44429693
2011	3636015.28060499
2012	3596421.04142896
2013	3694482.65789113
2014	3586962.75614042
2015	3527342.74940238
2016	4055762.44808156
2017	4458028.26091279
2018	4609093.16202249
2019	5534986.66211778
2020	5742530.4796475
2021	6679554.77201803