Year	current US$
1995	37000000
1996	39000000
1997	65000000
1998	68000000
1999	37000000
2000	33000000
2001	43000000
2002	43000000
2003	77000000
2004	91000000
2005	106000000
2006	86000000
2007	34000000
2008	27000000
2009	27000000
2010	29000000
2011	119000000
2012	37000000
2013	65000000
2014	82000000
2015	111000000
2016	114000000
2017	125000000
2018	133000000
2019	140000000
2020	52000000