Year	current US$
2002	2000000
2003	8000000
2004	1000000
2005	8000000
2006	5000000
2007	19000000
2008	23000000
2009	21000000
2010	27000000
2011	33000000
2012	35000000
2013	29000000
2014	18000000
2015	9000000
2016	6000000
2017	13000000
2018	89000000
2019	72000000
2020	23000000