Quarter	Percent
1986-01-01	29.6819787985866
1986-04-01	33.3117723156533
1986-07-01	33.5502766026684
1986-10-01	30.3227910009782
1987-01-01	30.5129042796472
1987-04-01	31.8555008210181
1987-07-01	34.7740019795447
1987-10-01	32.1865696328151
1988-01-01	32.5365205843294
1988-04-01	35.7620320855615
1988-07-01	37.4243443174176
1988-10-01	35.5263157894737
1989-01-01	37.1738393764826
1989-04-01	39.3722279085636
1989-07-01	40.5831903945112
1989-10-01	35.8762886597938
1990-01-01	35.0068775790922
1990-04-01	35.1155570886513
1990-07-01	36.7474048442907
1990-10-01	35.0069252077562
1991-01-01	35.0761772853186
1991-04-01	37.2875476933750
1991-07-01	37.6826722338205
1991-10-01	36.1198188784396
1992-01-01	36.8806699232380
1992-04-01	39.6847635726795
1992-07-01	40.4502286317270
1992-10-01	36.9534555712271
1993-01-01	38.5159010600707
1993-04-01	41.1493437389145
1993-07-01	40.2565016031350
1993-10-01	37.4866119243128
1994-01-01	36.3278453829635
1994-04-01	39.5190236898780
1994-07-01	39.1711711711712
1994-10-01	36.8135838150289
1995-01-01	37.6628075253256
1995-04-01	38.5480943738657
1995-07-01	37.7777777777778
1995-10-01	34.0394448502557
1996-01-01	35.4791514264813
1996-04-01	36.9908256880734
1996-07-01	36.4640883977901
1996-10-01	37.5831485587583
1997-01-01	35.2112676056338
1997-04-01	36.9419642857143
1997-07-01	37.7893950709485
1997-10-01	35.1310861423221
1998-01-01	36.3124295906872
1998-04-01	37.9479441720106
1998-07-01	38.8110564180235
1998-10-01	38.9753320683112
1999-01-01	39.3835616438356
1999-04-01	42.6116838487973
1999-07-01	42.0428462127008
1999-10-01	39.1121316494451
2000-01-01	39.3568147013783
2000-04-01	41.2576687116564
2000-07-01	42.7694668200997
2000-10-01	38.5380788365863
2001-01-01	40.8622663105685
2001-04-01	39.5508184240579
2001-07-01	42.4081787201818
2001-10-01	38.3314543404735
2002-01-01	37.9374534623976
2002-04-01	38.7740029542098
2002-07-01	41.3767850604174
2002-10-01	39.8766328011611
2003-01-01	39.3613204162182
2003-04-01	42.5373134328358
2003-07-01	41.1785462244178
2003-10-01	38.9122807017544
2004-01-01	39.8325776072550
2004-04-01	44.1666666666667
2004-07-01	43.8408304498270
2004-10-01	37.5688705234160
2005-01-01	41.3781282139184
2005-04-01	42.9498122226016
2005-07-01	41.2104726283577
2005-10-01	37.8890392422192
2006-01-01	36.3850555368563
2006-04-01	40.4290982232652
2006-07-01	40.0200601805416
2006-10-01	37.2162883845127
2007-01-01	36.2758161225849
2007-04-01	39.3333333333333
2007-07-01	40.3801267089030
2007-10-01	36.9753497668221
2008-01-01	40.2398401065956
2008-04-01	41.0726182544970
2008-07-01	41.9107856191744
2008-10-01	37.2796807449285
2009-01-01	40.7837927598804
2009-04-01	42.6724137931034
2009-07-01	42.8051604366523
2009-10-01	41.3645352669743
2010-01-01	41.4722313506408
2010-04-01	44.1272965879265
2010-07-01	43.7459070072037
2010-10-01	41.5877164325384
2011-01-01	42.3164763458401
2011-04-01	44.6655791190865
2011-07-01	45.3685583822570
2011-10-01	43.4060566590687
2012-01-01	42.2989254314556
2012-04-01	43.4485006518905
2012-07-01	44.9478487614081
2012-10-01	44.3322475570033
2013-01-01	43.3268229166667
2013-04-01	45.0227716330514
2013-07-01	45.6316986034427
2013-10-01	41.6315959857559
2014-01-01	41.7366042608134
2014-04-01	44.2047649710238
2014-07-01	45.1395572666025
2014-10-01	37.7075351213282
2015-01-01	39.1719745222930
2015-04-01	41.1857958148383
2015-07-01	42.5679949399114
2015-10-01	40.4215162000629
2016-01-01	38.7096774193548
2016-04-01	42.0822942643392
2016-07-01	42.7815805849409
2016-10-01	36.4848109113453
2017-01-01	37.9246448424954
2017-04-01	42.4120913016656
2017-07-01	39.5685670261941
2017-10-01	34.8923076923077
2018-01-01	35.1567301782422
2018-04-01	38.8683886838868
2018-07-01	37.7846153846154