Year	current US$
1995	3224000000
1996	4081000000
1997	4329000000
1998	3743000000
1999	3431000000
2000	3373000000
2001	3306000000
2002	3497000000
2003	8848000000
2004	11265000000
2005	12430000000
2006	8470000000
2007	9345000000
2008	10820000000
2009	10329000000
2010	13224000000
2011	11000000000
2012	14581000000
2013	15093000000
2014	18812000000
2015	24968000000
2016	30752000000
2017	34065000000
2018	42093000000
2019	46054000000
2020	10597000000