Year	constant 2015 US$
2000	19651286637.479008
2001	19545668307.555027
2002	21485847732.05739
2003	22815941665.961826
2004	25487381438.622833
2005	28777140210.09002
2006	34050075546.371136
2007	37602082358.83382
2008	38573677788.5394
2009	29453647017.086555
2010	31759785436.060295
2011	32702942457.59956
2012	34914800631.97926
2013	35347311840.00915
2014	33242078329.027565
2015	34182001002.27206
2016	38380007161.89329
2017	42440915307.62966
2018	45969824731.4126
2019	45438007257.6263
2020	43542484134.22684
2021	38121074175.36083
2022	41598077668.069214
2023	41367742871.37164