Year	current US$
2005	4213403599.581367
2006	8624387797.597456
2007	11947382632.70143
2008	16825631956.548532
2009	11749783171.779022
2010	12938094970.861324
2011	15050732779.413261
2012	14357649305.363174
2013	16890974338.440447
2014	18605671967.200527
2015	19914822874.048138
2016	14798605484.841555
2017	20735261885.96695
2018	24232843032.720913
2019	32023136604.364777