Year	constant 2015 US$
1991	43972.83415217371
1992	43912.63718782282
1993	43634.55277277912
1994	44640.89713757348
1995	44866.9255940592
1996	44389.423321405025
1997	45495.137584230804
1998	46368.858944526175
1999	46763.87862130805
2000	47569.32797267927
2001	47901.78638820438
2002	47721.43669039202
2003	47673.98943353881
2004	48060.523386634064
2005	48457.839800951624
2006	49138.55150874254
2007	49923.8954843362
2008	49888.33479496121
2009	48520.479550479744
2010	49042.599715252996
2011	49639.62891618167
2012	49797.20365682305
2013	49887.80999419177
2014	50181.53254397653
2015	50114.388710346524
2016	50266.03395948019
2017	50911.75021269498
2018	51289.19218063882
2019	51852.51178586488
2020	49707.78016636772
2021	52391.4654322676
2022	55261.30680267836