Quarter	Index source base
2005-01-01	87.6
2005-04-01	87.4
2005-07-01	86.9
2005-10-01	86.7
2006-01-01	87.9
2006-04-01	87.3
2006-07-01	86.8
2006-10-01	87.4
2007-01-01	85.8
2007-04-01	84.4
2007-07-01	84.0
2007-10-01	84.0
2008-01-01	82.7
2008-04-01	82.6
2008-07-01	82.3
2008-10-01	82.1
2009-01-01	81.9
2009-04-01	83.6
2009-07-01	83.5
2009-10-01	84.4
2010-01-01	85.6
2010-04-01	88.4
2010-07-01	88.1
2010-10-01	87.5
2011-01-01	89.2
2011-04-01	90.5
2011-07-01	91.4
2011-10-01	92.2
2012-01-01	93.2
2012-04-01	94.7
2012-07-01	95.3
2012-10-01	95.3
2013-01-01	96.8
2013-04-01	97.4
2013-07-01	97.7
2013-10-01	98.0
2014-01-01	99.0
2014-04-01	98.6
2014-07-01	98.4
2014-10-01	98.6
2015-01-01	99.5
2015-04-01	99.7
2015-07-01	99.7
2015-10-01	101.1
2016-01-01	101.4
2016-04-01	102.4
2016-07-01	103.5
2016-10-01	103.6
2017-01-01	103.9
2017-04-01	104.0
2017-07-01	105.3
2017-10-01	105.2
2018-01-01	104.1
2018-04-01	104.8
2018-07-01	106.3