Year	current US$
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	866272.257158411
2000	6282965.36026452
2001	5717826.97103608
2002	7125464.43141238
2003	16573859.644175
2004	24593444.8368724
2005	24645571.0625603
2006	62439847.5507093
2007	93696720.3363012
2008	54225247.4099566
2009	32962244.9082659
2010	61716488.3943092
2011	37830596.6103887
2012	30228498.0124416
2013	37106998.399893
2014	40236754.1115708
2015	50175456.5309385
2016	77183591.1900717
2017	140468905.243635
2018	278145059.670547
2019	436777587.639678
2020	519691748.884767
2021	469411963.032376