Year	constant 2015 US$
2006	3644268833.553004
2007	3840098641.1849627
2008	4101343056.863115
2009	4296663305.717693
2010	4459180708.278416
2011	4597971780.267369
2012	4812527872.968054
2013	4988070871.775559
2014	5230748239.502918
2015	5398138297.87234
2016	5679446590.409841
2017	5740466254.001129
2018	5848161820.074688
2019	5940834319.494132
2020	5646531322.710727
2021	5687075003.781461
2022	5966867995.904727
2023	5906263941.191239