Year	Percent
1995-01-01	54.1709
1996-01-01	45.5229
1997-01-01	40.1679
1998-01-01	26.9634
1999-01-01	36.4970
2000-01-01	55.5485
2001-01-01	52.2305
2002-01-01	45.0630
2003-01-01	49.9096
2004-01-01	45.7329
2005-01-01	33.0279
2006-01-01	37.7064
2007-01-01	38.6438
2008-01-01	16.9181
2009-01-01	18.8009
2010-01-01	17.8304
2011-01-01	10.1056
2012-01-01	11.3331
2013-01-01	18.5500
2014-01-01	20.2918
2015-01-01	19.8517
2016-01-01	14.6084