Year	current US$
2005	9150029071.49235
2006	13447106929.280926
2007	17357275462.29815
2008	23556720890.852943
2009	19919568547.116222
2010	23262398792.922062
2011	25955583923.940895
2012	26885914486.931503
2013	30656636324.8716
2014	30773875678.383385
2015	31047493841.173897
2016	25284424702.024582
2017	34034736568.925247
2018	39258866647.60776
2019	48837775892.21597