Year	current US$
1993	187900000
1994	304300000
1995	269780000
1996	657910000
1997	3727530000
1998	1942080000
1999	485850000
2000	548600000
2001	348000000
2004	1971430000
2005	3654220000
2006	2916820000
2007	6909370000
2008	8799790000
2009	5833970000
2010	3309430000
2011	2548940000
2012	2662690000
2013	5735640000
2014	5804960000
2015	3559680000
2016	2459047123.14501
2017	2385830010.0998497
2018	1916580000
2019	1718600000
2020	1040880000
2021	1675560000
2022	2314260000