Year	Percent
1999-01-01	1.644670000000000
2000-01-01	1.544060000000000
2001-01-01	2.536060000000000
2002-01-01	6.631010000000001
2003-01-01	9.320990000000000
2004-01-01	9.935250000000000
2005-01-01	10.448000000000000
2006-01-01	14.658500000000000
2007-01-01	13.025100000000000
2008-01-01	7.338170000000000
2009-01-01	10.825300000000000
2010-01-01	13.307800000000000
2011-01-01	12.090800000000000
2012-01-01	16.559600000000000
2013-01-01	14.578600000000000
2014-01-01	19.231400000000000
2015-01-01	15.463000000000000
2016-01-01	17.614200000000000