Annual Percent
1983-01-01 18.975
1984-01-01 18.975
1985-01-01 16.075
1986-01-01 14.375
1987-01-01 13.350
1988-01-01 12.625
1989-01-01 11.250
1990-01-01 10.450
1991-01-01 11.225
1992-01-01 13.450
1993-01-01 19.500
1994-01-01 21.550
1995-01-01 20.525
1996-01-01 18.550
1997-01-01 18.475
1998-01-01 20.175
1999-01-01 18.300
2000-01-01 14.425
2001-01-01 15.975
2002-01-01 17.200
2003-01-01 22.150
2004-01-01 20.050
2005-01-01 20.975
2006-01-01 18.750
2007-01-01 17.075
2008-01-01 17.275
2009-01-01 21.425
2010-01-01 22.450
2011-01-01 18.675
2012-01-01 20.400
2013-01-01 24.725
2014-01-01 23.975
2015-01-01 23.800
2016-01-01 21.725
2017-01-01 20.200