Year	Millions of 2000 Dollars
1998-01-01	99.26790000000000
1999-01-01	82.01310000000000
2000-01-01	84.53410000000000
2001-01-01	96.97790000000000
2002-01-01	113.09899999999999
2003-01-01	158.67400000000000
2004-01-01	164.30800000000000
2005-01-01	321.73000000000000
2006-01-01	484.49199999999996
2007-01-01	960.62300000000000
2008-01-01	378.64700000000000
2009-01-01	476.26099999999997
2010-01-01	585.02400000000000
2011-01-01	720.17900000000000
2012-01-01	827.71600000000000
2013-01-01	928.44300000000000
2014-01-01	1110.44000000000000
2015-01-01	1064.42000000000000
2016-01-01	948.74000000000000