Year	current US$
1990	727055.939437241
1991	768555.210547043
1992	1071675.28959784
1993	1121761.88003691
1994	1171494.86480343
1995	1528714.12251783
1996	1273384.18849357
1997	1655610.04716376
1998	1883106.48598912
1999	1952610.82581629
2000	2413009.46353909
2001	2911026.13736737
2002	2418331.37779843
2003	2941803.61569174
2004	3529989.6605368
2005	3722599.3141966
2006	4169044.14519164
2007	4635584.84794833
2008	4830793.33427833
2009	13808738.4923111
2010	5144083.87135376
2011	5369109.88517001
2012	7767512.13506707
2013	5495315.68628666
2014	6060736.4930775
2015	6259107.66036321
2016	6464080.02788724
2017	6360905.8464432
2018	6660386.82938993
2019	6932416.60485448
2020	5882464.46148626
2021	6586279.75689873