Year	current US$
1995	22000000
1996	22000000
1997	25000000
1998	25000000
1999	23000000
2000	43000000
2001	21000000
2002	22000000
2003	36000000
2004	45000000
2005	54000000
2006	53000000
2007	61000000
2008	27000000
2009	31000000
2010	26000000
2011	38000000
2012	27000000
2013	27000000
2014	44000000
2015	46000000
2016	43000000
2017	50000000
2018	51000000
2019	47000000
2020	9000000