Year	current US$
2005	3188735693.968981
2006	2737502584.1950345
2007	3947312853.7173867
2008	5567502215.806736
2009	8056811474.623469
2010	6904542478.303841
2011	8150082118.223513
2012	10423911337.283213
2013	6621993297.974246
2014	6219931965.364443
2015	3234530044.7691755
2016	1860402554.5724876
2017	1702827014.4108374
2018	1660719924.8716786
2019	1294713673.5250273
2021	984222293.0228342
2022	1173891161.654254
2023	1308448039.157904