Year	current US$
1995	48000000
1996	54000000
1997	57000000
1998	60000000
1999	75000000
2000	77000000
2001	83000000
2002	80000000
2003	138000000
2004	164000000
2005	186000000
2006	273000000
2007	304000000
2008	281000000
2009	290000000
2010	313000000
2011	298000000
2012	361000000
2013	521000000
2014	808000000
2015	711000000
2016	818000000
2017	829000000
2018	866000000
2019	937000000
2020	274000000