Year	constant 2015 US$
2000	6756003585.4586525
2001	7343769856.488133
2002	7786671436.849845
2003	8698327422.772306
2004	9653540146.112377
2005	10819399321.290766
2006	11412118259.159658
2007	12394216961.06503
2008	13171105672.952435
2009	13945934370.615454
2010	13481303595.314453
2011	13392236353.863789
2012	13617497309.339703
2013	14113245025.350307
2014	15432002473.023113
2015	15957931844.566542
2016	14926987174.735159
2017	14733825190.241138
2018	15129676782.78822
2019	15464444373.2324
2020	14579135702.701366
2021	12710036633.387115
2022	12432122601.018654
2023	12078670006.866844