Year	current US$
1995	2000000
1996	18000000
1997	5000000
1998	5000000
1999	4000000
2000	3000000
2001	4000000
2002	6000000
2003	6000000
2004	14000000
2005	16000000
2006	24000000
2007	22000000
2008	32000000
2009	32000000
2010	54000000
2011	64000000
2012	73000000
2013	63000000
2014	56000000
2015	51000000
2016	54000000
2017	85000000
2018	103000000
2019	111000000
2020	23000000