Year	Percent
2000-01-01	6.450550000000000
2001-01-01	8.512260000000001
2002-01-01	9.128760000000000
2003-01-01	15.969900000000000
2004-01-01	15.395400000000000
2005-01-01	17.422100000000000
2006-01-01	17.362900000000000
2007-01-01	21.653700000000000
2008-01-01	8.868900000000000
2009-01-01	16.088400000000000
2010-01-01	20.614800000000000
2011-01-01	18.907400000000000
2012-01-01	25.997900000000000
2013-01-01	20.112400000000000
2014-01-01	24.919800000000000
2015-01-01	18.921100000000000
2016-01-01	23.742500000000000