Year	current US$
1993	37520000
1994	83450000
1995	53540000
1996	99190000
1997	122160000
1998	94470000
1999	70810000
2000	65420000
2001	105350000
2002	55030000
2003	102660000
2004	114100000
2005	139800000
2006	156870000
2007	411780000
2008	348680000
2009	340260000
2010	365000000
2011	510030000
2012	295840000
2013	321260000
2014	463330000
2015	460790000
2016	319568571.01741296
2017	449585432.590497
2018	455000000
2019	373220000
2020	310770000
2021	306480000
2022	243210000