Year	constant 2015 US$
2006	8409479767.178764
2007	10232600986.553877
2008	12753082183.982231
2009	11152469010.038944
2010	14130290625.739166
2011	19793661494.471947
2012	22324492189.554802
2013	22831943146.805607
2014	19541142694.680172
2015	21091211319.960308
2016	20860507102.653145
2017	22460742043.674316
2018	23575310436.46674
2019	27319344028.6667
2020	24920357966.038464
2021	26363583606.838676
2022	26731023102.283344
2023	26399383251.64615