Year	current US$
1995	16000000
1996	19000000
1997	21000000
1998	24000000
1999	36000000
2000	48000000
2001	52000000
2002	56000000
2003	64000000
2004	65000000
2005	71000000
2006	88000000
2007	111000000
2008	121000000
2009	122000000
2010	104000000
2011	102000000
2012	105000000
2013	125000000
2014	118000000
2015	117000000
2016	129000000
2017	130000000
2018	130000000
2019	131000000
2020	39000000