Year	current US$
2006	8481559326.72424
2007	1054285061.29713
2008	-9974384901.81768
2009	-25606164737.7451
2010	-21405777513.1025
2011	-30803821236.771
2012	-19898775770.0343
2013	-13056779892.8863
2014	-10390852093.899
2015	-8050108001.19129
2016	-6837777585.62001
2017	-8687161415.4248
2018	-7860034900.35825
2019	-5363874833.52139
2020	-13030608700.9475
2021	-4404568728.86309