Year	constant 2015 US$
2006	231575636.6274231
2007	232204011.3147122
2008	226704772.22298133
2009	224507122.93541577
2010	214638237.9475542
2011	229909748.7252589
2012	252685511.60081938
2013	266582862.83527774
2014	283630160.9335004
2015	325273948.4182136
2016	336561710.01386917
2017	339246003.7964547
2018	330194379.88026565
2019	339959416.6288627
2020	325576109.1608878
2021	352774234.80355996