Year	Percent
1995-01-01	31.1854
1996-01-01	37.2289
1997-01-01	28.7740
1998-01-01	25.5606
1999-01-01	30.0018
2000-01-01	38.0316
2001-01-01	39.0262
2002-01-01	40.6382
2003-01-01	38.7945
2004-01-01	38.4497
2005-01-01	39.7226
2006-01-01	39.8186
2007-01-01	48.2452
2008-01-01	38.6572
2009-01-01	37.3373
2010-01-01	34.1492
2011-01-01	39.6176
2012-01-01	29.3730
2013-01-01	25.9084
2014-01-01	28.0098
2015-01-01	28.1374
2016-01-01	26.8026