Year	current US$
1992	8639050000
1994	12362970000
1995	18984250000
1996	26230262100
1997	42259400700
1998	27580230000
1999	17666590000
2000	23613780000
2001	15535170000
2002	13415560000
2003	19590360000
2004	12424370000
2005	15782160000
2006	24355680000
2007	31565380000
2008	41131090000
2009	66825980000
2010	70521337000
2011	66385417000
2012	84633610000
2013	54422770000
2014	50311245000
2015	38592425000
2016	45762311000
2017	52402720000
2018	32149280000
2019	36938520000
2020	28027510000
2021	19985240000
2022	25328580000