Year	current US$
1992	780600000
1994	4983700000
1995	5090500000
1996	12838620000
1997	9512740000
1998	10811900000
1999	1371060000
2000	5722700000
2001	2837230000
2002	2388910000
2003	6127850000
2004	2226290000
2005	9014450000
2006	10696470000
2007	10983380000
2008	14472050000
2009	12332570000
2011	12642470000
2012	28848500000
2013	17864360000
2014	43006540000
2015	11647640000
2016	10900170000
2017	20971540000
2018	31612110000
2019	32551890000
2020	5581760000
2021	16124670000
2022	42894070000