Year	Dollars
1999-01-01	256780190517.595
2000-01-01	242327027119.920
2001-01-01	234931169332.141
2002-01-01	247168355077.271
2003-01-01	223145058851.467
2004-01-01	211970779796.664
2005-01-01	184713500140.994
2006-01-01	197005463398.123
2007-01-01	215295816192.854
2008-01-01	218716648292.235
2009-01-01	282776580917.277
2010-01-01	300242477220.024
2011-01-01	316705627155.697
2012-01-01	332540664081.776
2013-01-01	330961335312.720
2014-01-01	327597434500.332
2015-01-01	333872438158.836
2016-01-01	344413203331.292
2017-01-01	353249050972.537