Year	current US$
1995	21000000
1996	26000000
1997	18000000
1998	21000000
1999	36000000
2000	40000000
2001	42000000
2002	44000000
2003	46000000
2004	43000000
2005	42000000
2006	41000000
2007	43000000
2008	41000000
2009	41000000
2010	36000000
2011	34000000
2012	37000000
2013	40000000
2014	49000000
2015	47000000
2016	53000000
2017	51000000
2018	48000000
2019	43400001.5258789
2020	20549999.237060502