Year	constant 2015 US$
2002	9956322896.511791
2003	11354458025.81855
2004	13309982401.369968
2005	14939935289.576912
2006	15575706511.68345
2007	17471671063.281326
2008	22104774959.535797
2009	22971241212.66218
2010	20893083170.53903
2011	23097442831.743126
2012	24754194372.183254
2013	25161822535.56388
2014	26029067402.754803
2015	25528682845.45871
2016	20543816198.166695
2017	21160166099.913067
2018	19987428702.404644
2019	23297517678.658504
2020	19731855899.841743
2021	21190088326.485508
2022	22900394205.888546
2023	24234700566.77419