Year	current US$
1990	6392519.69980196
1991	6365224.19965349
1992	6436083.71358141
1993	8375416.17304727
1994	6148321.20675961
1995	7186271.99747307
1996	7395968.17479806
1997	7192111.91810007
1998	7253172.58661371
1999	7928315.26756668
2000	6401866.70993244
2001	6524030.52239511
2002	6690213.36443357
2003	8098631.0777906
2004	8119721.70671891
2005	7656761.79694558
2006	7789274.43346771
2007	8992143.65530397
2008	9687497.97690736
2009	9053203.65004673
2010	8713540.13384203
2011	9439776.94881439
2012	9214301.44033697
2013	9892414.40685315
2014	10103662.4490202
2015	8585319.90206648
2016	8220664.03473814
2017	7993449.60191432
2018	8444100.70530949
2019	7979925.25810909
2020	7935380.10553077
2021	8397222.20068844