Year	current US$
1996	18369999.7123331
1997	37079999.9758601
1998	59140000.017359905
1999	77219999.2630631
2000	89329998.20262189
2001	73740000.4733354
2002	87039998.5276163
2003	182319995.816797
2004	78870000.3884733
2005	100940002.361313
2006	88819999.5718896
2007	110940002.32406001
2008	151699998.33405
2009	129069999.961182
2010	88410000.4006177
2011	86120001.4222413
2012	56590001.3577193
2013	6869999.83899295
2014	8080000.01125038
2015	5450000.04582107
2016	9479999.53478575
2017	14530000.3029406
2018	9050000.0435859
2019	7069999.90716577
2020	4000000
2021	13480000.0991672
2022	7600000.096485024