Year	current US$
2002	6642220000
2003	8862590000
2004	14269590000
2005	22164080000
2006	30986590000
2007	47286400000
2008	27563770000
2009	27205900000
2010	26466460000
2011	15651910000
2012	10963360000
2013	10822660000
2014	7113710000
2015	7440530000
2016	7812418043.964439
2017	10382730752.3874
2018	9889880000
2019	8668020000
2020	11302390000
2021	8651720000
2022	9409920000