Year	constant 2015 US$
2000	10928043412.76806
2001	11814354430.075409
2002	12747796660.90023
2003	12409331055.01827
2004	12027983370.930775
2005	12962744298.92137
2006	14347229801.076626
2007	12406156413.693258
2008	11568344147.704926
2009	13007335799.378834
2010	11738895647.811678
2011	13759969996.585327
2012	10218584337.581717
2013	9328204719.488487
2014	5063116341.60186
2015	5455547856.078037
2016	5348782226.286123
2017	5580433361.740399
2018	4759471115.092511
2019	5042014193.018505
2020	5183358992.935157
2021	4654024182.466372