Year	Percent
1991-01-01	4.6695600000000000
1992-01-01	3.8640300000000000
1993-01-01	4.0975199999999990
1994-01-01	4.5175199999999990
1995-01-01	5.5515300000000005
1996-01-01	7.2129400000000000
1997-01-01	8.5311300000000010
1998-01-01	10.0275000000000000
1999-01-01	10.0275000000000000
2000-01-01	11.9227000000000000
2001-01-01	15.5511000000000000
2002-01-01	14.7212000000000000
2003-01-01	12.3546000000000000
2004-01-01	10.9046000000000000
2005-01-01	11.9063000000000000
2006-01-01	16.5030000000000000
2007-01-01	14.1669000000000000
2008-01-01	10.2888000000000000
2009-01-01	15.7114000000000000
2010-01-01	21.1536000000000000
2011-01-01	22.7196000000000000
2012-01-01	16.2485000000000000
2013-01-01	11.0526000000000000
2014-01-01	10.3539000000000000
2015-01-01	10.9492000000000000
2016-01-01	10.7748000000000000