Year	current US$
1995	129000000
1996	21000000
1997	34000000
1998	72000000
1999	132000000
2000	199000000
2001	207000000
2002	248000000
2003	236000000
2004	251000000
2005	268000000
2006	321000000
2007	321000000
2008	496000000
2009	385000000
2010	477000000
2011	439000000
2012	592000000
2013	567000000
2014	532000000
2015	525000000
2016	546000000
2017	592000000
2018	611000000
2019	888000000
2020	304000000