Quarter	Index source base
2011-07-01	100.0000000
2011-10-01	102.2622403
2012-01-01	102.1276618
2012-04-01	102.1175269
2012-07-01	102.2656184
2012-10-01	104.4985680
2013-01-01	104.7576898
2013-04-01	103.6274266
2013-07-01	104.4815496
2013-10-01	106.3186922
2014-01-01	106.4663880
2014-04-01	105.5732871
2014-07-01	105.7011364
2014-10-01	108.9753678
2015-01-01	108.9353407
2015-04-01	107.2884276
2015-07-01	106.9934232
2015-10-01	107.8097586
2016-01-01	110.3779669
2016-04-01	109.3669703
2016-07-01	109.6716694
2016-10-01	111.5090814
2017-01-01	112.3257362
2017-04-01	111.7757772
2017-07-01	112.2851638
2017-10-01	113.5405771
2018-01-01	114.4696690
2018-04-01	113.6212828
2018-07-01	114.7747491