Year	current US$
1993	30200000
1994	44800000
1995	83580000
1996	314620000
1997	499030000
1998	609520000
1999	112600000
2001	169200000
2004	1680630000
2005	1953770000
2006	3597590000
2007	17359880000
2008	16718610000
2009	4492730000
2010	5105160000
2011	3871930000
2012	4092800000
2013	6227900000
2014	5132910000
2015	4084890000
2016	1509644083.4654
2017	2206106213.07957
2018	2586200000
2019	2716610000
2020	2481930000
2021	1793850000
2022	2234410000