Year	current US$
1995	59000000
1996	72000000
1997	80000000
1998	119000000
1999	111000000
2000	115000000
2001	130000000
2002	160000000
2003	64000000
2004	93000000
2005	75000000
2006	86000000
2007	97000000
2008	141000000
2009	111000000
2010	104000000
2011	150000000
2012	108000000
2013	133000000
2014	156000000
2015	141000000
2016	141000000
2017	164000000
2018	183000000
2019	177000000
2020	79000000