Year	constant 2015 US$
1990	2296.484559809061
1991	2301.1554741412792
1992	2438.8905964118776
1993	2543.856988818606
1994	2646.3054190940247
1995	2759.329805191286
1996	2752.426996243534
1997	2795.901699651458
1998	2852.3523503636884
1999	2862.5327138515063
2000	2890.804981099266
2001	2900.892522317195
2002	2922.504731008536
2003	2940.064325619104
2004	2958.617253006875
2005	3035.5936046432994
2006	3190.9125479091886
2007	3247.3335586345625
2008	3325.67215217317
2009	3209.5578247899202
2010	3275.8493756463054
2011	3383.5454708359657
2012	3430.391223453455
2013	3476.119251644098
2014	3520.4246329511566
2015	3586.2868408070144
2016	3644.8596651708663
2017	3702.883454495972
2018	3784.7863916073006
2019	3900.703803900594
2020	3563.766807548893
2021	3971.0365912530724
2022	4058.476970145366
2023	4170.837587879822