Year	Percent
1998-01-01	42847485.543907900
1999-01-01	44437708.534250000
2000-01-01	47132927.181938800
2001-01-01	55631707.222904000
2002-01-01	58331710.285480700
2003-01-01	56368428.327200696
2004-01-01	61357125.456156300
2005-01-01	68871008.706279000
2006-01-01	80484472.017065000
2007-01-01	81341874.675556900
2008-01-01	109718682.534690010
2009-01-01	113998770.062193000
2010-01-01	128887966.423013020
2011-01-01	144360618.644489000
2012-01-01	151075556.175770000
2013-01-01	144994293.090551000
2014-01-01	146122043.137806000
2015-01-01	160240862.461952000
2016-01-01	145818770.860450980
2017-01-01	146933710.002051000