Year	current US$
1998	-927638069.598942
1999	-952584579.277025
2000	-1350855084.86388
2001	-819059478.852173
2002	-274879033.806843
2003	53031893.3661178
2004	220261944.784942
2005	1165459993.38346
2006	2459544592.98808
2007	4568669747.43402
2008	8008696409.24683
2009	6862480618.1251
2010	11254517926.2296
2011	14071299311.0367
2012	14807801300.4354
2013	15401402365.9189
2014	16094289404.5697
2015	7014833151.30487
2016	2445806194.43831
2017	4133558009.37455
2018	4094595906.16427
2019	3758290487.19997
2020	3466883313.3304
2021	5052143133.40787