Year	constant 2021 international $
2000	15727.026831460831
2001	16114.028242124254
2002	16586.672508473657
2003	17059.459004250708
2004	17557.214089743742
2005	18411.210269039344
2006	19357.747252187237
2007	20338.385334600716
2008	20925.462145303733
2009	19712.15204175624
2010	20140.466703905386
2011	20648.017899269627
2012	21202.18687877282
2013	21196.99341949154
2014	21174.83202260739
2015	21580.13010092216
2016	21666.666367103135
2017	22315.223698294
2018	22714.308610056494
2019	23458.678540724835
2020	21936.20148727326
2021	22978.80613239752
2022	23355.383938876064