Year	Percent
1995-01-01	8.02892036275835
1996-01-01	7.55976938899908
1997-01-01	7.64647607304922
1998-01-01	6.72380943811565
1999-01-01	5.32796250615466
2000-01-01	5.50165710824989
2001-01-01	5.63483840593446
2002-01-01	5.78343910910639
2003-01-01	5.53673771682490
2004-01-01	5.68320383410504
2005-01-01	5.34669053936241
2006-01-01	5.10492867153057
2007-01-01	4.87819414301286
2008-01-01	4.89682900474745
2009-01-01	5.65446612548716
2010-01-01	5.61265401497279
2011-01-01	5.97922295811538
2012-01-01	5.73381464980086
2013-01-01	5.76063436025107
2014-01-01	5.46811154529197
2015-01-01	5.43927981024873
2016-01-01	5.63573044077601
2017-01-01	5.22685629575226