Year	constant 2015 US$
2000	9337.476608740557
2001	9972.123663413302
2002	6591.888910275776
2003	6512.484073093548
2004	6006.660960401741
2005	6122.756867357222
2006	5438.274536828476
2007	5910.126729449079
2008	10063.353443320542
2009	7377.688552236252
2010	8908.811725560308
2011	9645.19318656541
2012	9650.73424051104
2013	9388.163698957054
2014	11230.250500417864
2015	11667.275598801683
2016	11948.51349189004
2017	13473.916398995076
2018	14068.289742686706
2019	14227.67720646425
2020	17488.648582864047
2021	18768.035554494767
2022	20082.859658561265