Sept 1989 – Aug 1990

$ 25.00

Sept 1990 – Aug 1991

$ 26.21

Sept 1991 – Aug 1992

$ 27.59

Sept 1992 – Aug 1993

$ 28.43

Sept 1993 – Aug 1994

$ 29.30

Sept 1994 – Aug 1995

$ 30.07

Sept 1995 – Aug 1996

$ 30.93

Sept 1996 – Aug 1997

$ 31.78

Sept 1997 – Aug 1998

$ 32.65

Sept 1998 – Aug 1999

$ 33.21

Sept 1999 – Aug 2000

$ 33.82

Sept 2000 – Aug 2001

$ 34.87

Sept 2001 – Aug 2002

$ 36.03

Sept 2002 – Aug 2003

$ 36.60

Sept 2003 – Aug 2004

$ 37.43

Sept 2004 – Aug 2005

$ 38.29

Sept 2005 – Aug 2006

$ 39.48

Sept 2006 – Aug 2007

$ 41.02

Sept 2007 – Aug 2008

$ 41.96

Sept 2008 – Aug 2009

$ 43.75

Sept 2009 – Aug 2010

$ 43.83

Sept 2010 – Aug 2011

$ 44.48

Sept 2011 – Aug 2012

$ 45.55

Sept 2012 – Aug 2013

$ 46.73

Sept 2013 – Aug 2014

$ 47.52

Sept 2014 – Aug 2015

$ 48.27

Sept 2015 – Aug 2016

$ 48.49

Sept 2016 – Aug 2017

$ 48.88

Calendar Year 1996

$ 32.00

Calendar Year 1997

$ 32.88

Calendar Year 1998

$ 33.78

Calendar Year 1999

$ 34.35

Calendar Year 2000

$ 34.98

Calendar Year 2001

$ 36.07

Calendar Year 2002

$ 37.27

Calendar Year 2003

$ 37.86

Calendar Year 2004

$ 38.72

Calendar Year 2005

$ 39.61

Calendar Year 2006

$ 40.84

Calendar Year 2007

$ 42.43

Calendar Year 2008

$ 43.40

Calendar Year 2009

$ 45.25

Calendar Year 2010

$ 45.33

Calendar Year 2011

$ 46.00

Calendar Year 2012

$ 47.11

Calendar Year 2013

$ 48.33

Calendar Year 2014

$ 49.15

Calendar Year 2015

$ 49.93

Calendar Year 2016

$ 50.16

Calendar Year 2017

$ 50.56