Quarter	Percent
1986-01-01	1.22950819672131
1986-04-01	1.27175368139224
1986-07-01	1.60106737825217
1986-10-01	1.99587061252581
1987-01-01	2.00831024930748
1987-04-01	1.70333569907736
1987-07-01	2.17696629213483
1987-10-01	1.77556818181818
1988-01-01	2.03651685393258
1988-04-01	2.33406272793581
1988-07-01	2.92573143285821
1988-10-01	3.68975903614458
1989-01-01	4.12451361867704
1989-04-01	3.87897595034911
1989-07-01	3.17208564631245
1989-10-01	3.99042298483639
1990-01-01	3.95256916996047
1990-04-01	4.69116497263487
1990-07-01	4.57413249211356
1990-10-01	5.57324840764331
1991-01-01	5.17928286852590
1991-04-01	5.50314465408805
1991-07-01	5.82677165354331
1991-10-01	5.51181102362205
1992-01-01	6.25488663017983
1992-04-01	7.04776820673453
1992-07-01	6.81284259984338
1992-10-01	7.35863671572424
1993-01-01	6.02593440122044
1993-04-01	5.12445095168375
1993-07-01	5.64808110065170
1993-10-01	5.80130529369108
1994-01-01	5.78984989278056
1994-04-01	4.79210711768851
1994-07-01	4.46615491974878
1994-10-01	4.27521710086840
1995-01-01	3.67156208277704
1995-04-01	3.37972166998012
1995-07-01	3.07390451275343
1995-10-01	3.35230866540164
1996-01-01	3.42089187538180
1996-04-01	3.70149253731343
1996-07-01	4.08767772511848
1996-10-01	3.57981220657277
1997-01-01	4.35280641466208
1997-04-01	4.48099829835508
1997-07-01	3.52472996020466
1997-10-01	4.00228702115494
1998-01-01	4.18760469011725
1998-04-01	4.41657579062159
1998-07-01	5.11853448275862
1998-10-01	5.14861995753716
1999-01-01	5.73770491803279
1999-04-01	3.96702730551262
1999-07-01	6.23403168114461
1999-10-01	4.46985446985447
2000-01-01	4.88819552782111
2000-04-01	4.79102956167176
2000-07-01	5.05836575875486
2000-10-01	4.27553444180523
2001-01-01	3.61163227016886
2001-04-01	3.63128491620112
2001-07-01	4.41044104410441
2001-10-01	2.91777188328912
2002-01-01	3.78820490744727
2002-04-01	3.19369556200747
2002-07-01	2.95687885010267
2002-10-01	3.17202114680765
2003-01-01	4.06111781262565
2003-04-01	4.00155400155400
2003-07-01	2.93663060278207
2003-10-01	3.45475028163725
2004-01-01	3.27807083647325
2004-04-01	2.47182842602690
2004-07-01	2.42079031683873
2004-10-01	1.78759200841220
2005-01-01	1.89851570590266
2005-04-01	2.33596702164205
2005-07-01	1.91403626595030
2005-10-01	1.42431268631997
2006-01-01	2.79697268838434
2006-04-01	2.19709208400646
2006-07-01	2.00262639527249
2006-10-01	1.04506858262573
2007-01-01	1.79867466077627
2007-04-01	1.55472636815920
2007-07-01	1.19010335108049
2007-10-01	1.23647604327666
2008-01-01	2.07253886010363
2008-04-01	1.72413793103448
2008-07-01	2.16216216216216
2008-10-01	1.99345432906873
2009-01-01	2.89727831431080
2009-04-01	2.97601849176539
2009-07-01	3.33429146306410
2009-10-01	3.23488045007032
2010-01-01	2.71708683473389
2010-04-01	3.50396934026827
2010-07-01	3.65122615803815
2010-10-01	3.28358208955224
2011-01-01	2.96815974096060
2011-04-01	3.22234156820623
2011-07-01	2.71276595744681
2011-10-01	3.14300680984809
2012-01-01	3.35413416536662
2012-04-01	3.45096004151531
2012-07-01	4.30856553147575
2012-10-01	3.99477806788512
2013-01-01	3.73807682392369
2013-04-01	3.64188163884674
2013-07-01	3.90763765541741
2013-10-01	3.27291037260826
2014-01-01	3.43980343980344
2014-04-01	3.14110429447853
2014-07-01	2.55026974006866
2014-10-01	2.74104352007694
2015-01-01	3.77494590045684
2015-04-01	3.08210931856489
2015-07-01	3.54986718184014
2015-10-01	2.89404448696484
2016-01-01	3.34202417634511
2016-04-01	3.37853367042059
2016-07-01	3.38086476540938
2016-10-01	2.51658659345688
2017-01-01	3.01552106430155
2017-04-01	2.85777580859548
2017-07-01	2.86026200873362
2017-10-01	2.50756593169045
2018-01-01	2.78738115816768
2018-04-01	2.53001715265866
2018-07-01	2.07442258340462