Year	constant 2015 US$
1995	30722775854.690613
1996	30109537061.805607
1997	23323731117.691345
1998	24018469854.267868
1999	22164465049.303253
2000	23000250247.08852
2001	24710098118.1916
2002	26723879204.5447
2003	27988828268.193924
2004	30107026897.803074
2005	31602469392.318993
2006	33158075229.64244
2007	34151285301.392223
2008	37983370894.27842
2009	37723788288.29118
2010	38191797979.96474
2011	39668086036.24746
2012	40577141753.03688
2013	39992071338.276985
2014	40886941565.25473
2015	41775029209.2939
2016	43970300077.96646
2017	45690861658.23752
2018	46640916293.18901
2019	49630524410.64288
2020	48548300973.37231
2021	52613594172.6232