Year	constant 2011 international $
2009	17523629090.8238
2010	21441649252.1886
2011	23990800679.1528
2012	28297853098.0943
2013	29892655714.8392
2014	30692018484.7752
2015	30747817768.5968
2016	31506895892.8873
2017	33001625037.4012
2018	38423267440.3479