Year	constant 2015 US$
2000	9096316039.988508
2001	9485560571.760254
2002	8885901024.60581
2003	10091739469.667557
2004	10598898059.64536
2005	12048479109.829935
2006	13706318394.974056
2007	16189730660.755066
2008	17827668900.59609
2009	16519907580.43329
2010	18357970168.964634
2011	17121105559.760132
2012	20881879413.522915
2013	22424455352.038673
2014	22829161930.318806
2015	23408567786.7091
2016	24707904551.07104
2017	25878728903.852398
2018	25248166554.70227
2019	25682614527.34858
2020	23523055915.657364