Year	current US$
1994	-510483552.926858
1995	-230927575.782719
1996	-156156051.787595
1997	42626269.6443804
1998	229734467.073825
1999	305087878.927008
2000	163224157.085083
2001	103376638.338448
2002	22899204.2703966
2003	77338443.9816492
2004	288010850.818169
2005	448142692.125651
2006	544580302.532105
2007	619638012.994507
2008	874168340.633226
2009	724587830.130584
2010	782893994.231593
2011	1105571766.47389
2012	1247082751.92797
2013	1186477377.99055
2014	1685343240.18947
2015	2177055572.23468
2016	2122694002.77401
2017	2219019551.42898
2018	2043015809.38928
2019	2131954583.4435
2020	2038341786.0295
2021	1581334349.72445