Year	constant 2015 US$
1995	14407.008738162796
1996	15017.159960412164
1997	14926.57951830931
1998	15882.699635068644
1999	16134.85459258792
2000	17219.41298279511
2001	18301.00776208062
2002	18962.608777596433
2003	20605.87177915009
2004	21921.725843940494
2005	23696.143644765834
2006	24954.91092681485
2007	26845.222388592305
2008	26241.83026858689
2009	26177.04401905498
2010	26104.995734230397
2011	26090.178561660738
2012	27325.65563324305
2013	27511.872749563277
2014	27998.34455634088
2015	28614.73769720206
2016	29557.58601564104
2017	29356.11751330712
2018	30209.11636901616
2019	30309.430655703563
2020	29286.47410885601
2021	32295.037650902836
2022	32997.00257722322