Year	Percent
1995-01-01	8.55791243405441
1996-01-01	8.59646709158516
1997-01-01	7.81621190635828
1998-01-01	7.06149603253377
1999-01-01	6.42519985530750
2000-01-01	5.63355502674034
2001-01-01	6.20225398987098
2002-01-01	6.73913626190651
2003-01-01	6.51628628390076
2004-01-01	6.05254930733157
2005-01-01	5.69684848665762
2006-01-01	5.33674411826097
2007-01-01	5.27104180832517
2008-01-01	5.35605313291377
2009-01-01	7.95406352820247
2010-01-01	7.31695836435038
2011-01-01	6.53986706020352
2012-01-01	6.28548491370384
2013-01-01	6.19102575592531
2014-01-01	6.10252212684056
2015-01-01	6.20395783621877
2016-01-01	6.52924640691577
2017-01-01	5.75035730523213