Year	current US$
1995	105000000
1996	134000000
1997	136000000
1998	160000000
1999	152000000
2000	205000000
2001	160000000
2002	171000000
2003	171000000
2004	323000000
2005	355000000
2006	412000000
2007	368000000
2008	410000000
2009	389000000
2010	186000000
2011	529000000
2012	518000000
2013	612000000
2014	630000000
2015	568000000
2016	615000000
2017	635000000
2018	688000000
2019	749000000
2020	553000000