Year	current US$
1994	8423800000
1995	10567340000
1996	13281400000
1997	14079740000
1998	12505030000
1999	11094960000
2000	11300380000
2001	12493680000
2002	14956750000
2003	18284900000
2004	22843780000
2005	28615810000
2006	35481960000
2007	43563020000
2008	56531200000
2009	45356810000
2010	48644230000
2011	57344710000
2012	61464800000
2013	69110930000
2014	64817970000
2015	50809020000
2016	49818860000
2017	56658870000
2018	63623720000
2019	60971860000
2020	47214440000
2021	54620900000
2022	47820500000
2023	40421540000