Year	Percent
1989-01-01	5.3899800000000000
1990-01-01	3.1053000000000000
1991-01-01	4.9023400000000010
1992-01-01	4.2369600000000000
1993-01-01	5.5321800000000000
1994-01-01	17.1338000000000000
1995-01-01	17.0205000000000000
1996-01-01	5.2532700000000000
1997-01-01	7.0671100000000004
1998-01-01	7.4671300000000000
1999-01-01	17.3090000000000000
2000-01-01	24.2296000000000000
2001-01-01	12.7246000000000000
2002-01-01	9.9364600000000000
2003-01-01	6.8537700000000000
2004-01-01	8.6919600000000000
2005-01-01	16.8807000000000000
2006-01-01	14.3753000000000000
2007-01-01	13.1301000000000000
2008-01-01	25.0404000000000000
2009-01-01	16.9844000000000000
2010-01-01	18.9359000000000000
2011-01-01	10.2613000000000000
2012-01-01	14.2165000000000000
2013-01-01	5.3848400000000005
2014-01-01	10.4867000000000000