Year	constant 2015 US$
2007	2165895977.0772185
2008	2194150579.5434704
2009	2051169149.3886712
2010	2054947381.1138096
2011	2025050069.2018454
2012	2028647602.8879557
2013	1972006981.1997955
2014	1963267766.948606
2015	1960343744.135238
2016	1986216417.9052067
2017	2000294437.8549612
2018	1995596288.840224
2019	2030651708.4117248