Year	current US$
1993	-246889687.737222
1994	-160327534.685247
1995	-241314612.175201
1996	-210603441.245407
1997	-194092717.913346
1998	-269774527.942655
1999	-231956624.731207
2000	-321850621.356377
2001	-216452365.35219
2002	-141750930.540192
2003	27269525.8294007
2004	184904386.426081
2005	505104172.7103
2006	990435807.259101
2007	1451511813.01849
2008	1872974383.15058
2009	160773250.57205
2010	56454495.8239973
2011	-94838642.3813369
2012	154932631.839442
2013	232803590.195856
2014	65709993.4644406
2015	488582548.616402
2016	418044574.966701
2017	400984152.012351
2018	289329764.007004
2019	-369120707.535981
2020	418486323.923866
2021	542245995.846887