Annual Percent
1983-01-01 23.900
1984-01-01 24.325
1985-01-01 22.050
1986-01-01 20.250
1987-01-01 19.625
1988-01-01 17.600
1989-01-01 15.550
1990-01-01 14.550
1991-01-01 14.125
1992-01-01 15.375
1993-01-01 20.650
1994-01-01 23.125
1995-01-01 22.825
1996-01-01 22.125
1997-01-01 22.025
1998-01-01 22.075
1999-01-01 20.350
2000-01-01 16.625
2001-01-01 16.700
2002-01-01 17.700
2003-01-01 21.725
2004-01-01 21.100
2005-01-01 21.475
2006-01-01 20.475
2007-01-01 18.875
2008-01-01 17.825
2009-01-01 21.900
2010-01-01 22.400
2011-01-01 18.675
2012-01-01 19.675
2013-01-01 23.675
2014-01-01 23.300
2015-01-01 22.100
2016-01-01 20.125
2017-01-01 19.300