Month Index source base 1979-01-01 31.4 1979-02-01 31.4 1979-03-01 31.3 1979-04-01 31.5 1979-05-01 31.6 1979-06-01 32.2 1979-07-01 32.2 1979-08-01 32.5 1979-09-01 32.5 1979-10-01 32.8 1979-11-01 32.8 1979-12-01 32.8 1980-01-01 33.3 1980-02-01 33.5 1980-03-01 34.2 1980-04-01 34.2 1980-05-01 34.7 1980-06-01 35.4 1980-07-01 35.5 1980-08-01 35.7 1980-09-01 35.8 1980-10-01 36.1 1980-11-01 36.0 1980-12-01 36.3 1981-01-01 37.2 1981-02-01 37.3 1981-03-01 37.6 1981-04-01 37.9 1981-05-01 37.8 1981-06-01 38.7 1981-07-01 38.8 1981-08-01 38.8 1981-09-01 39.1 1981-10-01 39.4 1981-11-01 39.3 1981-12-01 39.3 1982-01-01 40.5 1982-02-01 40.7 1982-03-01 41.1 1982-04-01 42.2 1982-05-01 42.2 1982-06-01 42.8 1982-07-01 42.9 1982-08-01 42.9 1982-09-01 43.1 1982-10-01 43.3 1982-11-01 43.3 1982-12-01 43.3 1983-01-01 44.0 1983-02-01 44.0 1983-03-01 44.3 1983-04-01 44.7 1983-05-01 44.8 1983-06-01 45.4 1983-07-01 45.5 1983-08-01 45.5 1983-09-01 45.6 1983-10-01 45.9 1983-11-01 45.9 1983-12-01 45.9 1984-01-01 46.9 1984-02-01 46.9 1984-03-01 47.3 1984-04-01 47.6 1984-05-01 47.6 1984-06-01 47.5 1984-07-01 47.5 1984-08-01 47.6 1984-09-01 47.8 1984-10-01 48.0 1984-11-01 47.9 1984-12-01 48.2 1985-01-01 49.3 1985-02-01 49.3 1985-03-01 49.6 1985-04-01 50.1 1985-05-01 50.1 1985-06-01 51.1 1985-07-01 51.2 1985-08-01 51.2 1985-09-01 51.4 1985-10-01 51.6 1985-11-01 51.5 1985-12-01 51.6 1986-01-01 52.9 1986-02-01 52.9 1986-03-01 53.0 1986-04-01 53.6 1986-05-01 53.6 1986-06-01 54.7 1986-07-01 55.0 1986-08-01 55.1 1986-09-01 55.4 1986-10-01 55.7 1986-11-01 55.7 1986-12-01 56.1 1987-01-01 57.0 1987-02-01 57.0 1987-03-01 57.5 1987-04-01 58.0 1987-05-01 58.3 1987-06-01 59.0 1987-07-01 59.2 1987-08-01 59.3 1987-09-01 59.7 1987-10-01 59.9 1987-11-01 59.8 1987-12-01 60.0 1988-01-01 60.9 1988-02-01 61.1 1988-03-01 61.3 1988-04-01 61.9 1988-05-01 61.9 1988-06-01 62.7 1988-07-01 62.7 1988-08-01 62.5 1988-09-01 62.8 1988-10-01 62.9 1988-11-01 62.8 1988-12-01 62.7 1989-01-01 63.8 1989-02-01 63.7 1989-03-01 63.9 1989-04-01 64.4 1989-05-01 64.5 1989-06-01 65.4 1989-07-01 65.5 1989-08-01 65.4 1989-09-01 65.7 1989-10-01 66.0 1989-11-01 66.0 1989-12-01 65.9 1990-01-01 66.5 1990-02-01 66.7 1990-03-01 67.0 1990-04-01 67.7 1990-05-01 67.7 1990-06-01 68.0 1990-07-01 68.0 1990-08-01 67.9 1990-09-01 68.2 1990-10-01 68.6 1990-11-01 68.8 1990-12-01 68.9 1991-01-01 69.8 1991-02-01 70.0 1991-03-01 70.1 1991-04-01 70.5 1991-05-01 70.6 1991-06-01 70.7 1991-07-01 70.7 1991-08-01 70.7 1991-09-01 71.0 1991-10-01 71.1 1991-11-01 71.0 1991-12-01 71.2 1992-01-01 71.9 1992-02-01 71.9 1992-03-01 72.0 1992-04-01 72.4 1992-05-01 72.4 1992-06-01 72.9 1992-07-01 73.0 1992-08-01 72.9 1992-09-01 73.1 1992-10-01 73.3 1992-11-01 73.2 1992-12-01 73.3 1993-01-01 74.4 1993-02-01 74.5 1993-03-01 74.7 1993-04-01 74.9 1993-05-01 74.9 1993-06-01 75.0 1993-07-01 75.0 1993-08-01 75.0 1993-09-01 75.1 1993-10-01 75.2 1993-11-01 75.1 1993-12-01 75.1 1994-01-01 75.5 1994-02-01 75.4 1994-03-01 75.7 1994-04-01 76.1 1994-05-01 76.1 1994-06-01 76.0 1994-07-01 75.9 1994-08-01 75.7 1994-09-01 75.8 1994-10-01 76.1 1994-11-01 76.1 1994-12-01 76.1 1995-01-01 76.8 1995-02-01 76.8 1995-03-01 77.3 1995-04-01 77.4 1995-05-01 77.4 1995-06-01 77.8 1995-07-01 77.8 1995-08-01 77.8 1995-09-01 78.1 1995-10-01 78.1 1995-11-01 78.1 1995-12-01 78.0 1996-01-01 78.3 1996-02-01 78.2 1996-03-01 78.1 1996-04-01 78.4 1996-05-01 78.3 1996-06-01 78.5 1996-07-01 78.6 1996-08-01 78.5 1996-09-01 78.9 1996-10-01 78.8 1996-11-01 78.8 1996-12-01 78.9 1997-01-01 79.3 1997-02-01 79.3 1997-03-01 79.3 1997-04-01 79.6 1997-05-01 79.6 1997-06-01 80.0 1997-07-01 80.0 1997-08-01 79.9 1997-09-01 80.1 1997-10-01 79.8 1997-11-01 80.0 1997-12-01 80.0 1998-01-01 80.2 1998-02-01 80.2 1998-03-01 80.3 1998-04-01 81.1 1998-05-01 81.1 1998-06-01 81.4 1998-07-01 81.3 1998-08-01 81.2 1998-09-01 81.3 1998-10-01 81.6 1998-11-01 81.6 1998-12-01 81.5 1999-01-01 82.0 1999-02-01 82.1 1999-03-01 82.6 1999-04-01 82.8 1999-05-01 82.7 1999-06-01 83.5 1999-07-01 83.4 1999-08-01 83.2 1999-09-01 83.2 1999-10-01 83.0 1999-11-01 83.2 1999-12-01 83.2 2000-01-01 83.6 2000-02-01 83.7 2000-03-01 83.8 2000-04-01 84.1 2000-05-01 83.8 2000-06-01 84.4 2000-07-01 84.4 2000-08-01 84.4 2000-09-01 84.7 2000-10-01 84.5 2000-11-01 84.4 2000-12-01 83.8 2001-01-01 84.1 2001-02-01 84.9 2001-03-01 84.6 2001-04-01 85.0 2001-05-01 84.6 2001-06-01 85.0 2001-07-01 85.3 2001-08-01 85.0 2001-09-01 85.0 2001-10-01 85.0 2001-11-01 85.0 2001-12-01 84.8 2002-01-01 85.3 2002-02-01 85.5 2002-03-01 85.8 2002-04-01 85.6 2002-05-01 85.8 2002-06-01 86.2 2002-07-01 86.3 2002-08-01 85.9 2002-09-01 85.9 2002-10-01 85.7 2002-11-01 85.6 2002-12-01 85.6 2003-01-01 86.1 2003-02-01 86.1 2003-03-01 86.3 2003-04-01 86.6 2003-05-01 86.5 2003-06-01 85.6 2003-07-01 85.5 2003-08-01 85.0 2003-09-01 85.1 2003-10-01 85.1 2003-11-01 84.9 2003-12-01 84.8 2004-01-01 85.5 2004-02-01 85.4 2004-03-01 85.5 2004-04-01 86.0 2004-05-01 85.8 2004-06-01 85.8 2004-07-01 85.8 2004-08-01 85.5 2004-09-01 85.7 2004-10-01 85.7 2004-11-01 85.6 2004-12-01 85.7 2005-01-01 86.2 2005-02-01 86.2 2005-03-01 86.2 2005-04-01 86.6 2005-05-01 86.5 2005-06-01 86.6 2005-07-01 86.4 2005-08-01 86.1 2005-09-01 86.3 2005-10-01 86.4 2005-11-01 86.2 2005-12-01 86.3 2006-01-01 86.0 2006-02-01 86.4 2006-03-01 86.6 2006-04-01 87.1 2006-05-01 86.8 2006-06-01 87.0 2006-07-01 86.9 2006-08-01 86.6 2006-09-01 87.0 2006-10-01 87.1 2006-11-01 86.9 2006-12-01 86.8 2007-01-01 87.2 2007-02-01 87.3 2007-03-01 87.6 2007-04-01 87.7 2007-05-01 87.6 2007-06-01 87.5 2007-07-01 87.4 2007-08-01 87.5 2007-09-01 87.3 2007-10-01 87.5 2007-11-01 87.9 2007-12-01 88.4 2008-01-01 87.6 2008-02-01 88.0 2008-03-01 87.4 2008-04-01 88.4 2008-05-01 88.4 2008-06-01 89.0 2008-07-01 89.3 2008-08-01 89.2 2008-09-01 89.8 2008-10-01 89.8 2008-11-01 90.1 2008-12-01 90.3 2009-01-01 90.3 2009-02-01 90.7 2009-03-01 89.8 2009-04-01 91.0 2009-05-01 90.8 2009-06-01 91.8 2009-07-01 92.2 2009-08-01 92.0 2009-09-01 93.1 2009-10-01 93.1 2009-11-01 93.2 2009-12-01 93.6 2010-01-01 93.6 2010-02-01 93.6 2010-03-01 92.4 2010-04-01 93.6 2010-05-01 93.3 2010-06-01 94.0 2010-07-01 94.4 2010-08-01 94.3 2010-09-01 94.2 2010-10-01 94.0 2010-11-01 94.0 2010-12-01 94.8 2011-01-01 94.2 2011-02-01 93.4 2011-03-01 93.3 2011-04-01 94.0 2011-05-01 93.8 2011-06-01 93.7 2011-07-01 93.7 2011-08-01 93.4 2011-09-01 93.4 2011-10-01 93.4 2011-11-01 93.7 2011-12-01 94.3 2012-01-01 93.8 2012-02-01 93.7 2012-03-01 93.3 2012-04-01 94.6 2012-05-01 94.3 2012-06-01 94.1 2012-07-01 93.7 2012-08-01 93.7 2012-09-01 93.8 2012-10-01 94.2 2012-11-01 94.3 2012-12-01 94.6 2013-01-01 94.4 2013-02-01 93.6 2013-03-01 93.3 2013-04-01 94.7 2013-05-01 94.7 2013-06-01 95.0 2013-07-01 95.2 2013-08-01 95.2 2013-09-01 94.9 2013-10-01 94.9 2013-11-01 95.4 2013-12-01 96.1 2014-01-01 95.7 2014-02-01 95.2 2014-03-01 95.0 2014-04-01 97.4 2014-05-01 96.7 2014-06-01 96.5 2014-07-01 96.9 2014-08-01 96.7 2014-09-01 97.0 2014-10-01 97.4 2014-11-01 97.7 2014-12-01 98.5 2015-01-01 98.1 2015-02-01 98.0 2015-03-01 98.3 2015-04-01 99.9 2015-05-01 99.4 2015-06-01 99.9 2015-07-01 100.0 2015-08-01 100.2 2015-09-01 100.6 2015-10-01 101.3 2015-11-01 101.7 2015-12-01 102.6 2016-01-01 102.8 2016-02-01 102.5 2016-03-01 102.9 2016-04-01 103.7 2016-05-01 103.6 2016-06-01 104.6 2016-07-01 104.7 2016-08-01 105.0 2016-09-01 105.4 2016-10-01 105.7 2016-11-01 106.2 2016-12-01 106.6 2017-01-01 106.3 2017-02-01 106.3 2017-03-01 105.4 2017-04-01 106.9 2017-05-01 107.0 2017-06-01 108.0 2017-07-01 107.9 2017-08-01 108.1 2017-09-01 108.2 2017-10-01 107.8 2017-11-01 108.4 2017-12-01 108.6 2018-01-01 107.9 2018-02-01 107.7 2018-03-01 108.0 2018-04-01 108.9 2018-05-01 108.9 2018-06-01 110.1 2018-07-01 110.3 2018-08-01 111.1 2018-09-01 111.6 2018-10-01 111.5