Year	current US$
1992	18770660123.96694
1993	10941284111.703398
1994	10012736360.35168
1995	8872712589.321766
1996	7573731898.240463
1997	8299522120.961061
1998	7716342036.168499
1999	6768075150.648619
2000	8980867281.850065
2001	10401584730.840761
2002	11589313373.551931
2003	13272767132.107498
2004	18947365751.46102
2005	25458960716.435883
2006	32788929787.461723
2007	44926943202.18422
2008	49571463782.454956
2009	39121521979.88311
2010	44257402191.985344
2011	51341105803.156906
2012	61596840640.456024
2013	63395762891.41188
2014	56749434112.915535
2015	45236045679.37649
2016	39079991232.17208
2017	40746709251.89091
2018	46453964705.610306
2019	51629140772.722496
2020	45332610743.20957
2021	49324871010.72416
2022	59378480327.708534