Year	current US$
2001	22000000
2002	23000000
2003	1000000
2004	1000000
2005	2000000
2006	1000000
2007	4000000
2008	38000000
2009	16000000
2010	18000000
2011	17000000
2012	22000000
2013	21000000
2014	19000000
2015	12000000
2016	16000000
2017	13000000
2018	16000000
2019	15000000
2020	14000000