Month Index 2015=100 1996-12-01 4.65 1997-01-01 5.51 1997-02-01 8.41 1997-03-01 9.88 1997-04-01 13.26 1997-05-01 13.10 1997-06-01 15.97 1997-07-01 16.39 1997-08-01 21.52 1997-09-01 21.64 1997-10-01 22.25 1997-11-01 25.56 1997-12-01 27.40 1998-01-01 33.99 1998-02-01 40.40 1998-03-01 42.32 1998-04-01 43.89 1998-05-01 47.98 1998-06-01 45.53 1998-07-01 45.56 1998-08-01 49.04 1998-09-01 50.68 1998-10-01 54.08 1998-11-01 55.14 1998-12-01 52.78 1999-01-01 49.48 1999-02-01 48.21 1999-03-01 52.15 1999-04-01 53.33 1999-05-01 58.56 1999-06-01 59.15 1999-07-01 59.17 1999-08-01 58.54 1999-09-01 58.44 1999-10-01 59.46 1999-11-01 63.01 1999-12-01 56.66 2000-01-01 56.94 2000-02-01 58.28 2000-03-01 59.77 2000-04-01 60.78 2000-05-01 60.53 2000-06-01 60.54 2000-07-01 61.23 2000-08-01 61.16 2000-09-01 62.10 2000-10-01 63.85 2000-11-01 63.68 2000-12-01 64.39 2001-01-01 64.39 2001-02-01 65.18 2001-03-01 65.31 2001-04-01 66.31 2001-05-01 66.18 2001-06-01 67.46 2001-07-01 67.46 2001-08-01 67.09 2001-09-01 68.58 2001-10-01 67.10 2001-11-01 66.97 2001-12-01 66.97 2002-01-01 69.03 2002-02-01 68.60 2002-03-01 70.06 2002-04-01 71.37 2002-05-01 69.75 2002-06-01 69.75 2002-07-01 66.48 2002-08-01 65.66 2002-09-01 66.36 2002-10-01 70.76 2002-11-01 66.36 2002-12-01 63.94 2003-01-01 66.36 2003-02-01 66.93 2003-03-01 65.43 2003-04-01 66.43 2003-05-01 69.77 2003-06-01 62.15 2003-07-01 65.74 2003-08-01 63.77 2003-09-01 64.75 2003-10-01 65.32 2003-11-01 63.77 2003-12-01 61.66 2004-01-01 61.66 2004-02-01 63.77 2004-03-01 62.67 2004-04-01 66.32 2004-05-01 64.75 2004-06-01 64.75 2004-07-01 64.75 2004-08-01 65.96 2004-09-01 63.06 2004-10-01 63.57 2004-11-01 64.03 2004-12-01 64.03 2005-01-01 66.00 2005-02-01 66.00 2005-03-01 68.93 2005-04-01 68.35 2005-05-01 65.26 2005-06-01 65.26 2005-07-01 65.26 2005-08-01 66.49 2005-09-01 65.96 2005-10-01 66.57 2005-11-01 67.15 2005-12-01 67.15 2006-01-01 67.15 2006-02-01 67.15 2006-03-01 64.71 2006-04-01 69.11 2006-05-01 68.32 2006-06-01 68.32 2006-07-01 68.32 2006-08-01 68.03 2006-09-01 74.79 2006-10-01 68.81 2006-11-01 69.60 2006-12-01 69.60 2007-01-01 69.60 2007-02-01 69.60 2007-03-01 66.78 2007-04-01 69.37 2007-05-01 68.86 2007-06-01 68.86 2007-07-01 68.86 2007-08-01 70.50 2007-09-01 72.80 2007-10-01 74.87 2007-11-01 73.82 2007-12-01 81.00 2008-01-01 84.62 2008-02-01 90.53 2008-03-01 80.64 2008-04-01 78.58 2008-05-01 85.48 2008-06-01 85.48 2008-07-01 85.48 2008-08-01 80.42 2008-09-01 87.81 2008-10-01 84.88 2008-11-01 85.86 2008-12-01 85.86 2009-01-01 86.89 2009-02-01 86.89 2009-03-01 86.89 2009-04-01 90.18 2009-05-01 90.18 2009-06-01 90.18 2009-07-01 90.18 2009-08-01 90.18 2009-09-01 90.18 2009-10-01 90.98 2009-11-01 92.37 2009-12-01 92.37 2010-01-01 92.48 2010-02-01 92.17 2010-03-01 92.17 2010-04-01 92.17 2010-05-01 92.17 2010-06-01 92.22 2010-07-01 92.87 2010-08-01 93.42 2010-09-01 93.41 2010-10-01 94.45 2010-11-01 94.45 2010-12-01 94.45 2011-01-01 94.76 2011-02-01 95.16 2011-03-01 94.77 2011-04-01 94.59 2011-05-01 94.90 2011-06-01 95.03 2011-07-01 95.25 2011-08-01 95.25 2011-09-01 95.36 2011-10-01 95.64 2011-11-01 95.43 2011-12-01 96.50 2012-01-01 96.50 2012-02-01 96.50 2012-03-01 97.10 2012-04-01 97.10 2012-05-01 97.10 2012-06-01 97.10 2012-07-01 97.66 2012-08-01 97.37 2012-09-01 97.32 2012-10-01 97.32 2012-11-01 97.96 2012-12-01 98.97 2013-01-01 98.97 2013-02-01 98.97 2013-03-01 98.53 2013-04-01 98.95 2013-05-01 98.95 2013-06-01 98.83 2013-07-01 98.40 2013-08-01 98.29 2013-09-01 99.30 2013-10-01 100.03 2013-11-01 100.03 2013-12-01 99.75 2014-01-01 99.64 2014-02-01 99.64 2014-03-01 100.27 2014-04-01 100.27 2014-05-01 100.27 2014-06-01 100.55 2014-07-01 100.73 2014-08-01 100.73 2014-09-01 100.73 2014-10-01 100.73 2014-11-01 100.73 2014-12-01 100.73 2015-01-01 100.45 2015-02-01 99.87 2015-03-01 100.15 2015-04-01 100.15 2015-05-01 100.15 2015-06-01 100.15 2015-07-01 99.85 2015-08-01 99.85 2015-09-01 99.85 2015-10-01 99.85 2015-11-01 99.85 2015-12-01 99.85 2016-01-01 99.85 2016-02-01 100.00 2016-03-01 100.07 2016-04-01 100.48 2016-05-01 100.30 2016-06-01 100.30 2016-07-01 100.30 2016-08-01 100.30 2016-09-01 100.49 2016-10-01 101.44 2016-11-01 101.60 2016-12-01 101.56 2017-01-01 101.80 2017-02-01 101.57 2017-03-01 101.57 2017-04-01 101.72 2017-05-01 101.72 2017-06-01 101.72 2017-07-01 101.72 2017-08-01 101.72 2017-09-01 102.36 2017-10-01 102.34 2017-11-01 102.53 2017-12-01 102.53 2018-01-01 102.58 2018-02-01 102.86 2018-03-01 102.86 2018-04-01 102.99 2018-05-01 102.91 2018-06-01 102.91 2018-07-01 102.91 2018-08-01 103.58 2018-09-01 103.75 2018-10-01 104.67