Year	constant 2015 US$
2008	4580661082.498626
2009	4811290686.576837
2010	5048966087.018206
2011	5368051162.242688
2012	5459962717.314587
2013	5751568358.018805
2014	5944177154.365356
2015	6295848422.715734
2016	6646638934.1494665
2017	6967382841.608456
2018	7204735953.904349
2019	7547450874.832311
2020	7144396206.529796
2021	7912108452.015963
2022	8250627894.093529
2023	8526025165.232043