Year	constant 2015 US$
1995	23436799438.110466
1996	24488009464.07971
1997	26129135774.115627
1998	25757444894.2287
1999	23492635429.597572
2000	25282071725.464485
2001	27773902550.214737
2002	30677720042.72529
2003	32030712715.139977
2004	36989840446.44209
2005	36840073784.53136
2006	40503204578.01192
2007	45578483119.76431
2008	48281249942.27399
2009	44015568070.17278
2010	42468008673.721535
2011	43734897378.65303
2012	42992918125.09579
2013	42824216307.248985
2014	42455102571.26032
2015	42448238316.8863
2016	43076178811.18642
2017	44734962199.97119
2018	47634597315.49329
2019	50615812424.10896
2020	50178394380.920944
2021	53980880325.756256
2022	55747583357.17046
2023	55840405013.53606