Quarterly Percent
1968-01-01 50.9101006611519
1968-04-01 56.4392191491504
1968-07-01 55.5942053195619
1968-10-01 53.5253129119953
1969-01-01 50.7223038050429
1969-04-01 55.6251861730439
1969-07-01 55.0009561646054
1969-10-01 53.0870178329535
1970-01-01 50.7146047463197
1970-04-01 55.4566602043194
1970-07-01 54.8950094894594
1970-10-01 52.7616693294134
1971-01-01 50.6167367157335
1971-04-01 54.1532527163868
1971-07-01 53.5018932155113
1971-10-01 51.8665879390952
1972-01-01 49.5037433684992
1972-04-01 52.4743923802107
1972-07-01 52.4851374517054
1972-10-01 52.1197190592862
1973-01-01 50.7657763152084
1973-04-01 52.9063155702838
1973-07-01 52.7951785965155
1973-10-01 52.2271607583482
1974-01-01 49.0331534320506
1974-04-01 52.0733793166634
1974-07-01 51.1599950216583
1974-10-01 50.0482716490667
1975-01-01 47.5687393373820
1975-04-01 51.2223971479799
1975-07-01 51.1865208222379
1975-10-01 49.5101434827204
1976-01-01 47.9119432554284
1976-04-01 50.8469454249847
1976-07-01 51.3810938402525
1976-10-01 50.0517887205083
1977-01-01 48.4725541892090
1977-04-01 52.5344254003063
1977-07-01 52.3244074469214
1977-10-01 51.3441722382585
1978-01-01 49.5254952013212
1978-04-01 53.4996162781538
1978-07-01 53.0258978869863
1978-10-01 52.1882440176518
1979-01-01 50.4329696369675
1979-04-01 53.6699691353868
1979-07-01 53.4959311195112
1979-10-01 52.5091971512139
1980-01-01 50.3247290270729
1980-04-01 53.8981058496553
1980-07-01 54.0174894351230
1980-10-01 52.5835808939964
1981-01-01 50.4601740294511
1981-04-01 54.1021159961536
1981-07-01 53.7177320784416
1981-10-01 53.3814638708313
1982-01-01 51.6123244507861
1982-04-01 54.4649579471386
1982-07-01 53.8934162078569
1982-10-01 53.8580231342085
1983-01-01 52.9093717129031
1983-04-01 55.7915887423605
1983-07-01 55.5719694859753
1983-10-01 54.4866254553910
1984-01-01 52.5025356827217
1984-04-01 55.8104761995199
1984-07-01 55.7518965897570
1984-10-01 54.9210864185772
1985-01-01 53.1735530958894
1985-04-01 55.8530815191480
1985-07-01 55.6291856178404
1985-10-01 54.5506387506044
1986-01-01 53.4459413233442
1986-04-01 56.0016482429596
1986-07-01 55.7859581807628
1986-10-01 54.6798114743351
1987-01-01 53.2819744624899
1987-04-01 56.3508797404551
1987-07-01 55.7652712037404
1987-10-01 55.2034900809414
1988-01-01 53.9584744634752
1988-04-01 56.7548733128441
1988-07-01 56.2482727408830
1988-10-01 55.3872721362730
1989-01-01 54.6513923322576
1989-04-01 57.6736709847276
1989-07-01 57.0380321989070
1989-10-01 56.5471660978961
1990-01-01 55.8120892329709
1990-04-01 58.3818410484431
1990-07-01 57.8657243979036
1990-10-01 57.3814906621309
1991-01-01 56.5334743253916
1991-04-01 59.1002984747362
1991-07-01 58.7328601826307
1991-10-01 58.4384758722298
1992-01-01 57.0587503610874
1992-04-01 59.3011584027945
1992-07-01 58.6312917295131
1992-10-01 58.7755317549823
1993-01-01 56.7029711222909
1993-04-01 59.2504539005555
1993-07-01 58.6555977633660
1993-10-01 58.5794697303482
1994-01-01 57.1154463675607
1994-04-01 59.7118671352641
1994-07-01 58.5996221749907
1994-10-01 58.1798908707660
1995-01-01 57.3696017230534
1995-04-01 59.4734095428590
1995-07-01 58.9140864630551
1995-10-01 58.2363223880826
1996-01-01 57.5493322770931
1996-04-01 59.8609695081390
1996-07-01 59.6237857836729
1996-10-01 58.7523131229299
1997-01-01 58.3810835629199
1997-04-01 60.4125607099723
1997-07-01 60.3390983528346
1997-10-01 59.6465250019100
1998-01-01 58.9093457873762
1998-04-01 60.5891599231825
1998-07-01 60.3392556430803
1998-10-01 59.4257280946999
1999-01-01 58.5039897060251
1999-04-01 60.4451410690078
1999-07-01 60.1482911660503
1999-10-01 59.3339555094980
2000-01-01 58.3528354856192
2000-04-01 60.4519609238566
2000-07-01 59.9752334086070
2000-10-01 59.8543986679214
2001-01-01 59.4954689486894
2001-04-01 60.5807239549301
2001-07-01 60.1243512835555
2001-10-01 60.1036807552661
2002-01-01 59.0319347867264
2002-04-01 60.0856957549455
2002-07-01 60.1406151292136
2002-10-01 60.0463395115787
2003-01-01 58.9943347494047
2003-04-01 60.6035460846176
2003-07-01 60.3451139445055
2003-10-01 60.1204996018714
2004-01-01 59.3709472120826
2004-04-01 60.5990419074852
2004-07-01 60.9535071046864
2004-10-01 60.1239569305728
2005-01-01 59.7283453696828
2005-04-01 61.5461477672059
2005-07-01 61.4976149061824
2005-10-01 60.7230245736237
2006-01-01 60.2419224661595
2006-04-01 61.9618673399996
2006-07-01 61.8622084514647
2006-10-01 61.5237265530890
2007-01-01 60.7837437998998
2007-04-01 62.7778074545131
2007-07-01 62.1479842251250
2007-10-01 62.3687397228095
2008-01-01 61.4375914493445
2008-04-01 63.1066281259518
2008-07-01 62.5589842880601
2008-10-01 62.5845908808103
2009-01-01 62.1851090586885
2009-04-01 63.3450972527040
2009-07-01 63.6261833427748
2009-10-01 63.1807291282194
2010-01-01 62.4660379348873
2010-04-01 63.4985140446440
2010-07-01 63.7678645201528
2010-10-01 63.4684858445918
2011-01-01 63.1187102999488
2011-04-01 64.4798057645373
2011-07-01 63.8180229093183
2011-10-01 63.3283928395562
2012-01-01 62.5147591368725
2012-04-01 63.9013984526700
2012-07-01 63.6325234297607
2012-10-01 63.7284263354635
2013-01-01 64.0493182426775
2013-04-01 65.2499846860574
2013-07-01 65.1016894878688
2013-10-01 65.8520531443850
2014-01-01 65.0348879345315
2014-04-01 66.2545278260734
2014-07-01 66.3250031466336
2014-10-01 66.7472862022486
2015-01-01 65.9632457198004
2015-04-01 66.9944993954694
2015-07-01 67.3039005967791
2015-10-01 67.3894667923729
2016-01-01 67.3249257540661
2016-04-01 68.0338273537539
2016-07-01 68.7187058048615
2016-10-01 68.6749702559172
2017-01-01 68.2443514857998
2017-04-01 69.5610053146228
2017-07-01 69.9512536861815
2017-10-01 70.0373822143708
2018-01-01 70.4687647012305
2018-04-01 71.3494646043642
2018-07-01 71.8722595430642