Year	Percent
1982-01-01	9.803250000000000
1983-01-01	10.104700000000000
1984-01-01	12.517400000000000
1985-01-01	11.574500000000000
1986-01-01	9.469520000000000
1987-01-01	10.601300000000000
1988-01-01	12.724100000000000
1989-01-01	13.574800000000000
1990-01-01	14.114400000000000
1991-01-01	15.403700000000000
1992-01-01	15.884700000000000
1993-01-01	14.447100000000000
1994-01-01	13.657200000000000
1995-01-01	13.203200000000000
1996-01-01	11.015200000000000
1997-01-01	11.968000000000000
1998-01-01	12.311300000000000
1999-01-01	11.606100000000000
2000-01-01	11.389200000000000
2001-01-01	9.750000000000000
2002-01-01	8.332760000000000
2003-01-01	8.537910000000000
2004-01-01	8.490969999999999
2005-01-01	8.347650000000000
2006-01-01	8.826580000000000
2007-01-01	9.052060000000000
2008-01-01	9.852789999999999
2009-01-01	12.897800000000000
2010-01-01	16.829200000000000
2011-01-01	17.314500000000000
2012-01-01	18.708100000000000
2013-01-01	19.725600000000000
2014-01-01	23.413200000000000
2015-01-01	24.786800000000000
2016-01-01	26.308800000000000