Year	Percent
1996-01-01	11.35420
1997-01-01	9.43752
1998-01-01	16.55250
1999-01-01	15.44940
2000-01-01	16.23860
2001-01-01	27.54690
2002-01-01	18.29350
2003-01-01	19.06530
2004-01-01	16.44430
2005-01-01	12.38410
2006-01-01	16.92350
2007-01-01	14.81510
2008-01-01	10.58880
2009-01-01	26.70840
2010-01-01	21.72720
2011-01-01	27.45370
2012-01-01	22.60160
2013-01-01	16.94390
2014-01-01	14.80510
2015-01-01	13.58310
2016-01-01	13.54150