Year	current US$
2002	21000000
2003	30000000
2004	42000000
2005	50000000
2006	62000000
2007	87000000
2008	103000000
2009	93000000
2010	88000000
2011	99000000
2012	96000000
2013	76000000
2014	78000000
2015	54000000
2016	51000000
2017	47000000
2018	59000000
2019	45000000
2020	38000000