Year	Percent
1979-01-01	41.651500000000000
1980-01-01	44.533800000000000
1981-01-01	49.997100000000000
1982-01-01	55.278999999999996
1983-01-01	66.142600000000000
1984-01-01	62.071900000000000
1985-01-01	62.439300000000000
1986-01-01	60.598100000000000
1987-01-01	50.544000000000000
1988-01-01	45.572700000000000
1989-01-01	55.963600000000000
1990-01-01	58.406300000000000
1991-01-01	64.927100000000000
1992-01-01	67.533900000000000
1993-01-01	69.890200000000000
1994-01-01	68.628999999999990
1995-01-01	73.724600000000000
1996-01-01	78.517900000000000
1997-01-01	77.108800000000000
1998-01-01	79.375400000000000
1999-01-01	86.148900000000000
2000-01-01	91.745700000000000
2001-01-01	92.168900000000000
2002-01-01	89.597400000000000
2003-01-01	93.217999999999990
2004-01-01	96.261600000000000
2005-01-01	104.124000000000000
2006-01-01	103.110000000000000
2007-01-01	109.467999999999990
2008-01-01	109.971000000000000
2009-01-01	118.061000000000000
2010-01-01	125.826000000000010
2011-01-01	124.901000000000010
2012-01-01	125.884000000000000
2013-01-01	101.732000000000010
2014-01-01	95.507800000000000
2015-01-01	106.398000000000000
2016-01-01	105.723000000000000