Year	Millions of 2000 Dollars
2001-01-01	17227.6
2002-01-01	21208.4
2003-01-01	24139.4
2004-01-01	29681.8
2005-01-01	26686.1
2006-01-01	43906.9
2007-01-01	53052.7
2008-01-01	52042.5
2009-01-01	56775.0
2010-01-01	53213.3
2011-01-01	49947.7
2012-01-01	53367.8
2013-01-01	58337.0
2014-01-01	53816.8
2015-01-01	52789.6
2016-01-01	53008.6