Quarter	Percent
1998-01-01	4.86181652597289
1998-04-01	4.58355251621953
1998-07-01	5.15615175015720
1998-10-01	5.74965132496513
1999-01-01	7.23026754093762
1999-04-01	7.16818197774424
1999-07-01	7.35155183876273
1999-10-01	7.73555912551512
2000-01-01	8.34973983968500
2000-04-01	7.33163734011731
2000-07-01	7.15870277122434
2000-10-01	6.91444303261330
2001-01-01	7.20164609053498
2001-04-01	6.68987813976623
2001-07-01	6.82863003041234
2001-10-01	6.50667986145472
2002-01-01	6.46041533772769
2002-04-01	5.79146483753492
2002-07-01	5.77112329537467
2002-10-01	5.75064149882245
2003-01-01	6.03310765304314
2003-04-01	5.85287846481876
2003-07-01	6.24140969162996
2003-10-01	6.49556400506971
2004-01-01	7.44955295614376
2004-04-01	7.05898945735341
2004-07-01	6.92695214105793
2004-10-01	6.82911524785610
2005-01-01	7.37420072282458
2005-04-01	6.25325328798973
2005-07-01	6.15178295106771
2005-10-01	6.04535741366237
2006-01-01	6.62374771921369
2006-04-01	5.70424718404464
2006-07-01	5.64640543042271
2006-10-01	5.28442754888866
2007-01-01	4.80564155486756
2007-04-01	4.31743421052632
2007-07-01	4.07255188342787
2007-10-01	3.70207139709123
2008-01-01	3.71527541941180
2008-04-01	3.45573814837357
2008-07-01	3.26313664805221
2008-10-01	3.40627718664258
2009-01-01	4.99144611049613
2009-04-01	5.51749490358587
2009-07-01	6.36481413812577
2009-10-01	6.50579214657948
2010-01-01	7.44073601504264
2010-04-01	6.22423328305681
2010-07-01	5.97969036124521
2010-10-01	5.89080940122363
2011-01-01	6.34526401741971
2011-04-01	5.79136203628486
2011-07-01	5.54879285859201
2011-10-01	5.50817221108430
2012-01-01	6.32777607309672
2012-04-01	5.77425151730919
2012-07-01	5.86436348971636
2012-10-01	6.12788033957688
2013-01-01	6.59634175203706
2013-04-01	5.64087020946993
2013-07-01	5.78329419657833
2013-10-01	5.59073151017109
2014-01-01	5.79803238784273
2014-04-01	4.99039012712007
2014-07-01	4.76254450191442
2014-10-01	4.84842367349685
2015-01-01	5.23452284401190
2015-04-01	4.14611069811448
2015-07-01	3.92024560574879
2015-10-01	3.63183073916852
2016-01-01	3.79375463681122
2016-04-01	3.42193808882907
2016-07-01	3.27978580990629
2016-10-01	3.02329478800067
2017-01-01	2.78048944693170
2017-04-01	2.37399684362513
2017-07-01	2.21637115051326
2017-10-01	1.98128967591046
2018-01-01	1.95265480807811
2018-04-01	1.74742388368293