Year	current US$
1995	7000000
1996	25000000
1997	28000000
1998	27000000
1999	25000000
2000	23000000
2001	30000000
2002	20000000
2003	27000000
2004	31000000
2005	43000000
2006	36000000
2007	41000000
2008	79000000
2009	66000000
2010	105000000
2011	51000000
2012	50000000
2013	58000000
2014	90000000
2015	74000000
2016	77000000
2017	83000000
2018	98000000
2019	116000000