Year	current US$
1990	1489999.977871775
1991	3790000.0084191514
1992	4030000.112950801
1993	5919999.953359368
1994	7609999.882057304
1995	10070000.145584345
1996	12200000.025331968
1997	13060000.110417608
1998	15350000.290200107
1999	13009999.981150024
2000	14139999.985694883
2001	11240000.091493128
2002	12019999.999552965
2003	16490000.408142805
2004	21539999.859407503
2005	22809999.400749754
2006	24089999.776333556
2007	27460000.071674604
2008	30440000.288188443
2009	29839999.532327082
2010	37460000.867024094
2011	26639999.717474006
2012	24399999.657645848
2013	22909999.508410662
2014	16960000.09775157
2015	15960000.308230538
2016	11279999.658465339
2017	10479999.849572768
2018	14729999.5422363
2019	17209999.158978462
2020	14940000.38504598
2021	22230000.15318395
2022	15409999.72820283