Year	constant 2010 US$
2010	2479387636.92978
2011	4120080907.00499
2012	4724508685.73499
2013	4385746450.61007
2014	3435265084.36373
2015	2386726314.71672
2016	2398242457.50496
2017	3256606975.26322
2018	3987602672.37173