Year	current US$
1995	6598567917.205692
1996	6706498117.942284
1997	6556018244.013683
1998	7102341628.959276
1999	7373080906.148867
2000	6968352497.643733
2001	7209447176.684881
2002	7811857692.307692
2003	9798506228.765572
2004	11574246250
2005	12301900261.161547
2006	13447346631.53933
2007	15843257596.49603
2008	18480342756.701332
2009	18227761503.286007
2010	18483433424.479877
2011	20450770825.266605
2012	18772616446.552757
2013	18236673013.779522
2014	17611601444.712666
2015	15035001413.720243
2016	15694156049.7705
2017	17013161191.148
2018	18753102948.379284
2019	18937442773.771442
2020	18710660545.864635
2021	22095073331.087284
2022	21733925599.956234
2023	23847802353.70955