Year	current US$
1990	250314929.185092
1991	210007895.49187
1992	191916579.120947
1993	-105166141.91733
1994	63956156.7236486
1995	135452736.216716
1996	62547933.4848797
1997	152051052.47197
1998	153693931.289039
1999	169737166.776167
2000	120131685.606217
2001	394811049.900786
2002	304239820.985
2003	549421732.241149
2004	562735192.28873
2005	885803908.998191
2006	690259818.069312
2007	1141368245.06335
2008	1436674169.19493
2009	1359245741.10101
2010	1620812406.49838
2011	1150764577.67462
2012	1275235440.90096
2013	1521616628.67723
2014	2292260918.48702
2015	2274844190.09638
2016	2598460042.07819
2017	3379876332.57888
2018	3736692878.1712