Year	constant 2015 US$
1995	3934.578634651659
1996	4128.059007336764
1997	3580.648459086193
1998	3781.0651135994913
1999	3498.3804442150517
2000	3640.142107362759
2001	3947.479020717781
2002	4344.732411393589
2003	4590.411855939003
2004	4906.72366089862
2005	5249.560147286833
2006	5504.133265036452
2007	5632.167707876061
2008	6176.8990578140765
2009	6097.514490698622
2010	6302.539459074703
2011	6404.092088750745
2012	6611.839845711776
2013	6554.6833324393765
2014	6744.8556950304965
2015	6860.715225794496
2016	7114.826066951054
2017	7430.929321161639
2018	7600.659982676367
2019	7994.800589918158
2020	7665.97532841446
2021	8271.604541981387
2022	9216.31091599618
2023	9425.196740191283