Year	current US$
1995	33000000
1996	38000000
1997	30000000
1998	33000000
1999	39000000
2000	44000000
2001	45000000
2002	48000000
2003	50000000
2004	47000000
2005	45000000
2006	43000000
2007	46000000
2008	44000000
2009	43000000
2010	39000000
2011	37000000
2012	39000000
2013	42000000
2014	51000000
2015	50000000
2016	55000000
2017	53000000
2018	50000000
2019	45400001.5258789
2020	22040000.915527303