Year	constant 2015 US$
2000	4394.438249914588
2001	4496.569305203474
2002	4560.610652806612
2003	4712.3480005206975
2004	4887.2828923273
2005	5144.740402225807
2006	5305.931685657795
2007	5555.8816062895075
2008	5690.839241260989
2009	5343.083210378494
2010	5480.494577377141
2011	5556.912772360969
2012	5537.196609145626
2013	5569.732986819053
2014	5630.026011014572
2015	5738.350583652012
2016	5860.856975688762
2017	6031.338791330754
2018	6157.407887367336
2019	6191.537810849823
2020	5798.033045991471
2021	6320.904456535744
2022	6579.937663979385