Year	current US$
1994	10689880000
1995	15530400000
1996	17685190000
1997	35522950000
1998	22769530000
1999	14314590000
2001	12905870000
2003	18034380000
2005	14877030000
2006	20339650000
2007	24898660000
2008	34621050000
2009	56321360000
2010	62341227000
2011	58594617000
2012	82914690000
2013	47463970000
2014	38262595000
2015	37439825000
2016	41120191000
2017	50906460000
2018	31958280000
2019	27785210000
2020	28963540000
2021	20782390000
2022	24186330000