Year	constant 2015 US$
2000	8088.480296869794
2001	8655.401087436634
2002	9437.436129846876
2003	10335.85580216709
2004	11224.089880536487
2005	12633.130675454922
2006	14081.456075543778
2007	15292.927248535369
2008	15055.991760829775
2009	13332.122026255498
2010	13318.37283222847
2011	14500.052379270992
2012	15205.20840593845
2013	15920.312116309935
2014	16564.595441259193
2015	17019.638109749485
2016	17692.757729869914
2017	18630.273321906323
2018	19494.54695431627
2019	20329.592943382435
2020	20187.38192821572
2021	21946.126662649793
2022	21491.407160218445