Year	current US$
1995	140000000
1996	155000000
1997	175000000
1998	210000000
1999	192000000
2000	241000000
2001	199000000
2002	205000000
2003	272000000
2004	394000000
2005	480000000
2006	521000000
2007	466000000
2008	563000000
2009	476000000
2010	265000000
2011	622000000
2012	668000000
2013	795000000
2014	830000000
2015	742000000
2016	818000000
2017	845000000
2018	915000000
2019	984000000
2020	697000000