Year	constant 2015 US$
2000	10408392588.04477
2001	10921512146.028097
2002	11101702003.670877
2003	12072387993.792845
2004	12689808609.908966
2005	14068201543.45512
2006	15351410714.986773
2007	17613870145.0684
2008	21118838320.4303
2009	19962725389.170757
2010	22711251363.773083
2011	23287540634.036106
2012	24645629693.127247
2013	27230558581.64559
2014	27857531211.87644
2015	27547180851.063828
2016	28762748423.04494
2017	30881554154.868248
2018	32059044168.92389
2019	31331432188.711853
2020	30189770045.116356
2021	26319526843.936832