Year	constant 2015 US$
1995	7146121889364.288
1996	7081651342424.657
1997	7382732632789.649
1998	7060396093874.176
1999	7099558274065.28
2000	7223555077680.208
2001	7464790444616.415
2002	8480572937238.848
2003	8442837672634.036
2004	9468087343497.072
2005	10067324323379.787
2006	11200871885748.762
2007	12890472293129.283
2008	13416361705077.033
2009	14271422411119.473
2010	15364585567200.916
2011	16046482079277.8
2012	17022954812906.418
2013	17839593156998.047
2014	18786838372418.69
2015	19686262342445.598
2016	20763919828421.723
2017	21947270403093.11
2018	22686895643795.07
2019	23444452762326.58
2020	22894673056584.562
2021	24397795579241.71