Year	current US$
2001	1574980694.3498979
2002	1618980884.9557524
2003	1664109271.6133425
2004	1913443594.2818244
2005	3228936092.5799866
2006	3758630524.1660995
2007	4194119455.4118447
2008	8594137181.756296
2009	6897873955.071478
2010	6840837086.45337
2011	6051378761.061947
2012	4016708835.942818
2013	4074305323.3492174
2014	10439210347.17495
2015	8097821701.837985
2016	5594269026.548673
2017	24365690946.22192
2018	26122804628.99932
2019	16942228046.289993
2020	9019466848.196053