Year	current US$
1997	4000000
1998	5000000
1999	3000000
2000	4000000
2001	11000000
2002	4000000
2003	7000000
2004	16000000
2005	11000000
2006	36000000
2007	16000000
2008	4000000
2009	32000000
2010	24000000
2011	30000000
2012	41000000
2013	59000000
2014	37000000
2015	22000000
2016	17000000
2017	15000000
2018	16000000
2019	20100000.3814697