Year	current US$
1969	0
1970	0
1992	0
1993	82250000
1994	179449996.94824198
1995	180199996.94824198
1996	118220001.22070299
1997	125040000.915527
1998	154000000
1999	141000000
2000	151630004.882813
2001	211029998.779297
2002	237570007.32421902
2003	263480010.986328
2004	273450012.207031
2005	178729995.727539
2006	200529998.779297
2007	206470001.220703
2008	255210006.71386698
2009	245669998.168945
2010	296019989.013672
2011	346190002.441406
2012	368241851.80664104
2013	309441192.626953
2014	384424316.40625
2015	452810211.18164104
2016	423228088.378906
2017	521732299.804688
2018	438293640.136719
2019	437283691.40625
2020	449501617.43164104
2021	420745178.222656
2022	482660308.83789104