Quarter	Percent
1960-01-01	79.3176926032982
1960-04-01	76.0715816326336
1960-07-01	71.8086501122760
1960-10-01	74.0177925742682
1961-01-01	78.4769577744245
1961-04-01	86.3783852989956
1961-07-01	93.5648678455730
1961-10-01	106.5532836112680
1962-01-01	87.7149151919702
1962-04-01	101.2055208616830
1962-07-01	83.7235680363771
1962-10-01	84.0626434625419
1963-01-01	80.2091204259454
1963-04-01	79.8950960655079
1963-07-01	75.7674556870624
1963-10-01	74.4715624067838
1964-01-01	69.0841332762112
1964-04-01	70.5667333074707
1964-07-01	56.8031301699050
1964-10-01	59.8128512339590
1965-01-01	55.3257629859343
1965-04-01	51.8302286192134
1965-07-01	51.7684198758999
1965-10-01	64.9811684507678
1966-01-01	64.2935427554055
1966-04-01	76.4487690702086
1966-07-01	64.6979595792081
1966-10-01	66.9182324263884
1967-01-01	58.9273544540232
1967-04-01	62.7507785763481
1967-07-01	67.9704199065745
1967-10-01	82.9839049633856
1968-01-01	78.6716474778574
1968-04-01	77.4520131556319
1968-07-01	76.6389090696350
1968-10-01	69.6693020875228
1969-01-01	76.6887462767395
1969-04-01	69.7775350859086
1969-07-01	62.5277256408839
1969-10-01	65.7876135448217
1970-01-01	95.4889959635422
1970-04-01	91.6155579269385
1970-07-01	87.1255962867996
1970-10-01	79.1754931364532
1971-01-01	69.6068917314717
1971-04-01	81.7402390840159
1971-07-01	85.1950924012138
1971-10-01	88.3352557229735
1972-01-01	92.3634207923284
1972-04-01	107.4360410659670
1972-07-01	115.5720518076650
1972-10-01	105.7955711040360
1973-01-01	106.6382785937130
1973-04-01	126.7187263598030
1973-07-01	118.1704562796090
1973-10-01	106.1132833239820
1974-01-01	119.3211733429850
1974-04-01	111.3532613233440
1974-07-01	108.5940692382260
1974-10-01	112.6452161078430
1975-01-01	111.9212925413350
1975-04-01	106.7852987214910
1975-07-01	104.9502883882190
1975-10-01	109.4752431763880
1976-01-01	95.9381109058607
1976-04-01	106.9159039639020
1976-07-01	123.7317906749820
1976-10-01	119.3614756276780
1977-01-01	128.2216156314060
1977-04-01	165.9796342580550
1977-07-01	149.8458599522930
1977-10-01	187.3847945870880
1978-01-01	154.4170352109640
1978-04-01	159.6922633215380
1978-07-01	173.2407282896810
1978-10-01	177.9943883779390
1979-01-01	200.0643078387320
1979-04-01	188.2961186244080
1979-07-01	214.2665332639990
1979-10-01	233.2924671418750
1980-01-01	171.7466949672770
1980-04-01	120.7723333118130
1980-07-01	124.5107052594030
1980-10-01	113.4549260441400
1981-01-01	108.6142266812530
1981-04-01	87.5373300256218
1981-07-01	86.2538200109298
1981-10-01	91.0374270582034
1982-01-01	82.6948243156335
1982-04-01	86.2101652265819
1982-07-01	111.3846998392010
1982-10-01	117.3049028331200
1983-01-01	136.3356125159040
1983-04-01	130.7448904477630
1983-07-01	122.6340133024500
1983-10-01	99.3674876784853
1984-01-01	104.3355886881270
1984-04-01	106.9492326119220
1984-07-01	106.5270584474780
1984-10-01	121.1977647619670
1985-01-01	140.5644627233050
1985-04-01	140.4720942595530
1985-07-01	143.5621337988170
1985-10-01	179.9181897381840
1986-01-01	129.1656818774680
1986-04-01	156.1248699619510
1986-07-01	140.5595773318150
1986-10-01	165.8986942028410
1987-01-01	158.0374401779330
1987-04-01	137.7772905216730
1987-07-01	139.8281103326240
1987-10-01	133.1945518357220
1988-01-01	118.2265105404940
1988-04-01	110.1322224892140
1988-07-01	122.3095350549880
1988-10-01	121.6659501238710
1989-01-01	120.7001021416640
1989-04-01	111.6226373284260
1989-07-01	122.4090094812850
1989-10-01	134.8052906434630
1990-01-01	132.6792219816950
1990-04-01	124.7751915795440
1990-07-01	117.8926467971630
1990-10-01	140.0533275182910
1991-01-01	119.4509974565460
1991-04-01	125.7888470553180
1991-07-01	117.1723455218030
1991-10-01	137.4708211042070
1992-01-01	126.8540168340940
1992-04-01	126.8926189537760
1992-07-01	129.6019247562920
1992-10-01	100.3002546511450
1993-01-01	106.8172539868480
1993-04-01	136.6731209341720
1993-07-01	117.4924147242890
1993-10-01	122.9465549606170
1994-01-01	116.7448314186460
1994-04-01	105.2611240460660
1994-07-01	103.0063217609780
1994-10-01	105.3942436705330
1995-01-01	88.9248054836881
1995-04-01	106.5623237238410
1995-07-01	97.9458876957634
1995-10-01	86.0986136635710
1996-01-01	85.7573191782530
1996-04-01	92.6812100792092
1996-07-01	99.3007621612560
1996-10-01	109.9695727517730
1997-01-01	85.5769516516592
1997-04-01	102.0985815765530
1997-07-01	97.8131098798409
1997-10-01	98.9691889449571
1998-01-01	90.7682553334443
1998-04-01	93.7601557598901
1998-07-01	83.7297085955406
1998-10-01	95.1952833257257
1999-01-01	101.7136922007070
1999-04-01	104.4064774688730
1999-07-01	95.7900523207116
1999-10-01	100.0507988692620
2000-01-01	102.9771187298560
2000-04-01	107.4666829476890
2000-07-01	92.5060187917935
2000-10-01	106.5054179442130
2001-01-01	110.1934633327830
2001-04-01	112.3901757414980
2001-07-01	98.6905336811098
2001-10-01	112.8197842726040
2002-01-01	102.6635557862660
2002-04-01	123.2328657779740
2002-07-01	107.8321963958970
2002-10-01	116.4923493916560
2003-01-01	109.1245193827260
2003-04-01	110.7708025566220
2003-07-01	107.4347442075390
2003-10-01	104.1799593509490
2004-01-01	106.7857146662260
2004-04-01	92.8826192542410
2004-07-01	93.6592890958389
2004-10-01	95.7847488590580
2005-01-01	94.3398010617448
2005-04-01	98.2101503971069
2005-07-01	91.1802898510752
2005-10-01	95.9111152531089
2006-01-01	84.0255820435392
2006-04-01	87.4661741584675
2006-07-01	89.2883783186720
2006-10-01	84.2027274781068
2007-01-01	86.3758141795698
2007-04-01	90.0308305347379
2007-07-01	84.6155472153682
2007-10-01	89.6849918983926
2008-01-01	86.4622260833816
2008-04-01	93.9080669945766
2008-07-01	93.5364081781976
2008-10-01	92.2731414264410
2009-01-01	88.4467016070049
2009-04-01	103.2515052191620
2009-07-01	101.8764103805050
2009-10-01	96.7546229724670
2010-01-01	101.4896005328920
2010-04-01	110.0282673352820
2010-07-01	108.9177711864880
2010-10-01	119.3652027373510
2011-01-01	105.2809923046370
2011-04-01	109.9080546343920
2011-07-01	106.6070651477340
2011-10-01	103.0210336286450
2012-01-01	96.4476567246322
2012-04-01	97.5887429694446
2012-07-01	93.6730921470633
2012-10-01	95.8073216996399
2013-01-01	91.3158517230306
2013-04-01	94.3270086113311
2013-07-01	88.7714457500096
2013-10-01	97.2325769586707
2014-01-01	89.9688004240098
2014-04-01	92.3063247373524
2014-07-01	90.4824632161925
2014-10-01	94.2580283655251
2015-01-01	87.7438560585984
2015-04-01	103.5703825535140
2015-07-01	95.6913791293455
2015-10-01	96.6697337167642
2016-01-01	93.5660703982626
2016-04-01	111.5472245902120
2016-07-01	101.3706662379860
2016-10-01	103.1164148409750
2017-01-01	102.0356912277580
2017-04-01	108.2934331714450
2017-07-01	107.2869927513260
2017-10-01	111.4191030677540
2018-01-01	94.8971806053741
2018-04-01	105.7759849626840
2018-07-01	100.2896538271010