Year	current US$
2004	24196847747.95094
2005	34009066794.186478
2006	44983922165.173004
2007	60191271841.42693
2008	57146912163.366516
2009	63694862409.59241
2010	69687058376.23549
2011	65125136488.77978
2012	73694673777.635
2013	80938453194.40535
2014	97014850950.58055
2015	98824490537.86449
2016	94479902002.61012
2017	98439820359.37822
2018	100175912105.37508
2019	107426471910.74861