Year	US Dollars, Monthly Level
1993-01-01	-76282429.6132932
1994-01-01	-353319974.1208220
1995-01-01	-703452781.1566230
1996-01-01	-1129088398.3184000
1997-01-01	-1492904526.0007500
1998-01-01	-1554061624.6797500
1999-01-01	-1038623459.5362000
2000-01-01	-1083363048.6882200
2001-01-01	-990732230.0287790
2002-01-01	-1375169906.7944900
2003-01-01	-1943459128.3529198
2004-01-01	-2391168353.7840200
2005-01-01	-2544108350.5619100
2006-01-01	-3757551298.1008997
2007-01-01	-4670223822.0743300
2008-01-01	-3600003175.5697403
2009-01-01	-1104408651.6380900
2010-01-01	-679171569.1060480
2011-01-01	-764782458.0891141
2012-01-01	-2019007019.4950100
2013-01-01	-2129038876.3522298
2014-01-01	-2239101606.1938100
2015-01-01	-1707690046.8297000
2016-01-01	-1841130168.4771500
2017-01-01	-2143033058.4123597