Year	Percent
1993-01-01	15.395500000000000
1994-01-01	17.198700000000000
1995-01-01	10.639900000000000
1996-01-01	5.785630000000000
1997-01-01	5.775640000000000
1998-01-01	6.905660000000001
1999-01-01	7.690860000000001
2000-01-01	10.207800000000000
2001-01-01	14.707700000000000
2002-01-01	18.851500000000000
2003-01-01	21.183200000000000
2004-01-01	24.067500000000000
2005-01-01	29.876400000000000
2006-01-01	38.642400000000000
2007-01-01	48.328200000000000
2008-01-01	50.374100000000000
2009-01-01	50.872900000000000
2010-01-01	43.430700000000000
2011-01-01	37.984400000000000
2012-01-01	38.717200000000000
2013-01-01	37.433400000000000
2014-01-01	37.125300000000000
2015-01-01	35.952400000000000
2016-01-01	33.316400000000000