Quarter	Percent
1978-04-01	4.86401095661423
1978-07-01	5.27190943415762
1978-10-01	4.96069244001700
1979-01-01	5.22095216596946
1979-04-01	4.97063657576984
1979-07-01	5.28692458915700
1979-10-01	5.32041400884201
1980-01-01	5.46609621301652
1980-04-01	5.45241131093699
1980-07-01	5.25904240274425
1980-10-01	5.36378936107429
1981-01-01	5.62921110051062
1981-04-01	5.67385274504482
1981-07-01	5.52262141485480
1981-10-01	5.94269765481173
1982-01-01	5.92549584969485
1982-04-01	5.93415660048424
1982-07-01	5.88319665735560
1982-10-01	5.71608645933849
1983-01-01	5.97210971748951
1983-04-01	5.91395222447725
1983-07-01	5.63015338080424
1983-10-01	6.04210580624459
1984-01-01	5.85111627234605
1984-04-01	5.88048491693032
1984-07-01	6.04793429960614
1984-10-01	6.40517271343584
1985-01-01	6.57156919230971
1985-04-01	6.73490450963469
1985-07-01	6.40784987404708
1985-10-01	6.50522261516092
1986-01-01	6.41742831651363
1986-04-01	6.48194462713519
1986-07-01	6.22030306859840
1986-10-01	6.43612882298928
1987-01-01	6.57382067223526
1987-04-01	6.60425064646283
1987-07-01	6.51682737937309
1987-10-01	7.15573105245219
1988-01-01	7.05901757670092
1988-04-01	6.65515227829366
1988-07-01	7.21810721563178
1988-10-01	6.87751572538135
1989-01-01	7.36228300004361
1989-04-01	6.96257360517716
1989-07-01	7.02646276563819
1989-10-01	6.89859321017612
1990-01-01	6.95386581532889
1990-04-01	6.59392662175160
1990-07-01	6.50314737384652
1990-10-01	6.84817254292512
1991-01-01	6.84593999796109
1991-04-01	6.69568750142395
1991-07-01	6.93350329886895
1991-10-01	7.21540610193858
1992-01-01	7.46469912234745
1992-04-01	7.49942063994119
1992-07-01	7.60284417755756
1992-10-01	7.68163075799835
1993-01-01	7.74933320357660
1993-04-01	7.72900182077293
1993-07-01	7.74953335927923
1993-10-01	7.80583273952880
1994-01-01	8.40543477715552
1994-04-01	8.35041733285511
1994-07-01	8.19470060617499
1994-10-01	8.65512176743554
1995-01-01	8.47839999876956
1995-04-01	8.34892192133152
1995-07-01	8.14005632253668
1995-10-01	8.14684933463172
1996-01-01	8.17732167373561
1996-04-01	8.40764616718339
1996-07-01	8.38448305243641
1996-10-01	8.72801229170381
1997-01-01	8.79331351961994
1997-04-01	8.97282276743065
1997-07-01	8.87942108976694
1997-10-01	9.09878078703665
1998-01-01	9.15598404660637
1998-04-01	9.23115356072357
1998-07-01	9.09311738090288
1998-10-01	9.29077018420120
1999-01-01	9.42691103966196
1999-04-01	9.50453680768684
1999-07-01	9.58347906916299
1999-10-01	9.76851023660891
2000-01-01	10.06570229272530
2000-04-01	9.71871481859379
2000-07-01	9.53456084748861
2000-10-01	9.78594480469330
2001-01-01	10.15718144212430
2001-04-01	9.72916717364307
2001-07-01	9.77123394850700
2001-10-01	9.79354568508683
2002-01-01	9.86536576926502
2002-04-01	9.62427451334843
2002-07-01	9.91322779404954
2002-10-01	9.88093008602924
2003-01-01	9.87768340188673
2003-04-01	10.18036223833770
2003-07-01	10.37781359004970
2003-10-01	10.18600373864620
2004-01-01	10.15809339358530
2004-04-01	10.08742436713970
2004-07-01	10.21444820294110
2004-10-01	10.04689209687510
2005-01-01	9.92225027755727
2005-04-01	9.59853074396281
2005-07-01	9.54794798773433
2005-10-01	9.68837089167663
2006-01-01	9.82252933951078
2006-04-01	9.78115967129027
2006-07-01	9.47466653749374
2006-10-01	9.60464411304796
2007-01-01	9.60114194297821
2007-04-01	9.21202727237764
2007-07-01	9.05013201417885
2007-10-01	9.00390136778920
2008-01-01	9.03650632929185
2008-04-01	9.03715151710124
2008-07-01	9.10756186392208
2008-10-01	9.08618898421617
2009-01-01	9.70593833896445
2009-04-01	9.56941682304618
2009-07-01	9.67192015164182
2009-10-01	9.63533417768462
2010-01-01	9.59323107003052
2010-04-01	9.65785027532752
2010-07-01	9.42991929269321
2010-10-01	9.06832219879385
2011-01-01	9.20933864148134
2011-04-01	9.38015255195256
2011-07-01	9.49908436476233
2011-10-01	9.51247799267032
2012-01-01	9.67388378231538
2012-04-01	9.87072156940063
2012-07-01	9.92016934319786
2012-10-01	9.98669604498846
2013-01-01	9.83238584301386
2013-04-01	9.74791917250645
2013-07-01	9.98823691560984
2013-10-01	9.87876098338261
2014-01-01	10.10052980940190
2014-04-01	10.12148250500710
2014-07-01	10.17428053849310
2014-10-01	10.15362285052510
2015-01-01	9.57764729298693
2015-04-01	9.71641692538122
2015-07-01	9.63305786871856
2015-10-01	9.88498529324334
2016-01-01	9.73115888300253
2016-04-01	9.93875023466973
2016-07-01	10.02093557047880
2016-10-01	9.68726939912831
2017-01-01	9.81869050244874
2017-04-01	9.61364162373150
2017-07-01	9.81446971712691
2017-10-01	9.49209679789398
2018-01-01	9.62163859409134
2018-04-01	9.44413371226608
2018-07-01	9.74733288646718