Year	Percent
1996-01-01	14.79070
1997-01-01	15.96160
1998-01-01	14.33020
1999-01-01	12.01370
2000-01-01	10.02940
2001-01-01	11.42090
2002-01-01	8.59249
2003-01-01	12.67860
2004-01-01	15.79000
2005-01-01	16.67620
2006-01-01	17.80620
2007-01-01	22.08140
2008-01-01	21.20030
2009-01-01	18.10360
2010-01-01	19.28170
2011-01-01	20.44230
2012-01-01	18.27270
2013-01-01	17.33990
2014-01-01	17.62240
2015-01-01	17.02560
2016-01-01	15.02710