Year	current US$
1995	-64200490.5791602
1996	619559345.82703
1997	193469843.247727
1998	305126249.085287
1999	-88165265.6009231
2000	913997211.517107
2001	2101127793.341
2002	3690440953.2273
2003	4341307538.60708
2004	5784229872.42925
2005	8358996270.65626
2006	13884995091.6989
2007	16584899480.0041
2008	22482649923.7512
2009	17762448133.3353
2010	24619937935.285
2011	38692615089.8524
2012	36858062162.9134
2013	39982951380.4954
2014	39563397480.8687
2015	27522940843.7251
2016	18170425927.6417
2017	25694181174.6432
2018	31290491859.6808
2019	29212306166.4675
2020	26520285789.2192
2021	29408697754.763