Quarter	Percent
1999-01-01	9.09753708049486
1999-04-01	8.64853719443744
1999-07-01	8.52331958482527
1999-10-01	7.97744309194691
2000-01-01	7.31433545608650
2000-04-01	6.58655481237955
2000-07-01	7.20860272988506
2000-10-01	6.92910865738518
2001-01-01	6.28893092788262
2001-04-01	6.17725635962365
2001-07-01	6.45670011199232
2001-10-01	7.50883797805427
2002-01-01	7.41995285285972
2002-04-01	6.90970068683528
2002-07-01	7.62635582159413
2002-10-01	8.08909730363423
2003-01-01	8.20303596663172
2003-04-01	7.68022223234209
2003-07-01	8.33183331833318
2003-10-01	8.47348568892833
2004-01-01	8.64792800799911
2004-04-01	7.36352662404435
2004-07-01	9.13959613696225
2004-10-01	8.39845899834893
2005-01-01	8.54441360166551
2005-04-01	8.07690628955524
2005-07-01	8.69396885485675
2005-10-01	8.44061105389633
2006-01-01	8.65685252735800
2006-04-01	8.30415207603802
2006-07-01	8.12210001718508
2006-10-01	7.91315194181941
2007-01-01	7.94605238085156
2007-04-01	7.61052161524231
2007-07-01	7.23834503765124
2007-10-01	7.04213565421147
2008-01-01	7.04063511960723
2008-04-01	6.32175370838020
2008-07-01	7.71806531624638
2008-10-01	6.80277801020835
2009-01-01	7.89901601067378
2009-04-01	7.47842559461166
2009-07-01	8.19505094614265
2009-10-01	8.05276304109985
2010-01-01	8.59830283202127
2010-04-01	8.09664673879316
2010-07-01	8.63192182410424
2010-10-01	7.84531951920353
2011-01-01	7.15491900681719
2011-04-01	6.58703562837935
2011-07-01	7.76058682117981
2011-10-01	7.05663691509569
2012-01-01	7.19056650449410
2012-04-01	6.97750914847251
2012-07-01	7.71828464480430
2012-10-01	8.26536601161685
2013-01-01	8.46524151436031
2013-04-01	8.06976415189669
2013-07-01	8.66159086355440
2013-10-01	8.50414392561148
2014-01-01	8.71370975911181
2014-04-01	8.18582282573553
2014-07-01	8.66492672154186
2014-10-01	8.52710078573285
2015-01-01	8.73343210667521
2015-04-01	8.33485503276726
2015-07-01	8.17755598929513
2015-10-01	8.67843788118139
2016-01-01	8.32338841805053
2016-04-01	7.91841025330018
2016-07-01	7.88837883546750
2016-10-01	7.20313800071318
2017-01-01	7.72818121252498
2017-04-01	7.02016129032258
2017-07-01	7.23518850987433
2017-10-01	6.37141099668631
2018-01-01	6.13727754110762
2018-04-01	6.07944663241439