Year	U.S. Dollars
2000-01-01	79705400000
2001-01-01	77932500000
2002-01-01	77937400000
2003-01-01	89689400000
2004-01-01	105606600000
2005-01-01	118474800000
2006-01-01	137236400000
2007-01-01	152368900000
2008-01-01	170853300000
2009-01-01	167874900000
2010-01-01	177165500000
2011-01-01	213587500000
2012-01-01	224383500000
2013-01-01	231218500000
2014-01-01	244360900000
2015-01-01	270556100000
2016-01-01	278913500000