Year	current US$
2005	11790449995.916718
2006	17816117495.08515
2007	23318346597.634655
2008	30593653223.043728
2009	23273853732.82109
2010	27131773015.51829
2011	30111029276.523647
2012	30472271656.9276
2013	30948553417.52246
2014	31982103766.248253
2015	33732271071.421467
2016	27144657870.895912
2017	32752255830.369095
2018	40201044515.954994
2019	44683288685.96705