Year	constant 2015 US$
1994	63082832521.89151
1995	58238314201.50109
1996	62076587072.6699
1997	60913373942.535225
1998	61904748769.354546
1999	61632120691.97923
2000	66223012285.84171
2001	61173609834.5753
2002	64798737117.97797
2003	58444024478.06611
2004	52403247199.98037
2005	52225625876.8419
2006	51496965379.1297
2007	54671017116.32956
2008	58848009719.99497
2009	54362038628.63754
2010	51546534120.470665
2011	52252888684.57943
2012	51720850860.85306
2013	50916184959.75137
2014	47989150783.56732
2015	45965919991.16689
2016	42263135012.99673
2017	42575418083.44481
2018	39728520039.09532
2019	41456816820.517006
2020	39928447295.83722
2021	42422581130.97683
2022	47041561678.265854