Quarter	Percent
1999-04-01	32.1328344246960
2000-04-01	32.6306141154904
2001-04-01	33.8665447897623
2002-04-01	34.2727272727273
2003-01-01	33.9597315436242
2003-04-01	33.9597315436242
2003-07-01	33.9597315436242
2003-10-01	33.9597315436242
2004-01-01	34.4474153297683
2004-04-01	34.4474153297683
2004-07-01	34.4474153297683
2004-10-01	34.4474153297683
2005-01-01	35.7300397000441
2005-04-01	35.7300397000441
2005-07-01	35.7300397000441
2005-10-01	35.7300397000441
2006-01-01	37.5000000000000
2006-04-01	37.5000000000000
2006-07-01	37.5000000000000
2006-10-01	37.5000000000000
2007-01-01	38.5980095196884
2007-04-01	37.5328083989501
2007-07-01	38.8189318280504
2007-10-01	40.0693842150911
2008-01-01	36.7716875269745
2008-04-01	37.6897133220911
2008-07-01	36.7364374199060
2008-10-01	36.9472789115646
2009-01-01	38.8215628917677
2009-04-01	38.1855670103093
2009-07-01	38.7484459179445
2009-10-01	38.4329896907216
2010-01-01	38.8888888888889
2010-04-01	38.7713588283157
2010-07-01	39.2332789559543
2010-10-01	39.1321978913220
2011-01-01	39.0331602077507
2011-04-01	38.3660392470965
2011-07-01	39.0380761523046
2011-10-01	39.2842942345924
2012-01-01	39.7820163487738
2012-04-01	40.3906250000000
2012-07-01	41.2890625000000
2012-10-01	40.8560311284047
2013-01-01	41.1562021439510
2013-04-01	41.0058027079304
2013-07-01	40.3921568627451
2013-10-01	40.4271844660194
2014-01-01	42.3340961098398
2014-04-01	41.6030534351145
2014-07-01	40.9666283084005