Year	Percent
1979-01-01	0.13153800000000002
1980-01-01	0.53460800000000000
1981-01-01	0.48784099999999997
1982-01-01	0.70572000000000000
1983-01-01	0.93438700000000010
1984-01-01	0.88879200000000000
1985-01-01	0.87601100000000010
1986-01-01	1.36819000000000000
1987-01-01	1.41519000000000000
1988-01-01	1.33174000000000000
1989-01-01	1.25260000000000000
1990-01-01	1.17925000000000000
1991-01-01	0.96357500000000000
1992-01-01	1.01758000000000000
1993-01-01	0.79463000000000010
1994-01-01	0.78092400000000000
1995-01-01	1.21312000000000000
1996-01-01	1.20421000000000000
1997-01-01	1.10824000000000000
1998-01-01	1.23480000000000000
1999-01-01	1.10767000000000020
2000-01-01	1.06296000000000010
2001-01-01	1.34085000000000000
2002-01-01	1.42849000000000000
2003-01-01	2.28340000000000000
2004-01-01	2.53908000000000000
2005-01-01	2.59173000000000000
2006-01-01	2.72126000000000000
2007-01-01	2.55343000000000000
2008-01-01	2.34610000000000000
2009-01-01	2.45274000000000040
2010-01-01	2.08737000000000000
2011-01-01	1.98610000000000000
2012-01-01	1.93230000000000000
2013-01-01	1.81952999999999990
2014-01-01	1.88697000000000000
2015-01-01	2.24287000000000000
2016-01-01	2.66419000000000000
2017-01-01	2.66257999999999970