Quarter	Percent of Capacity, Seasonally Adjusted
1967-04-01	86.56628
1967-07-01	86.83484
1967-10-01	84.75410
1968-01-01	84.76821
1968-04-01	87.69676
1968-07-01	83.73222
1968-10-01	86.91589
1969-01-01	86.49454
1969-04-01	85.94581
1969-07-01	88.60643
1969-10-01	89.13041
1970-01-01	87.03882
1970-04-01	89.33868
1970-07-01	89.50665
1970-10-01	88.21909
1971-01-01	88.78409
1971-04-01	84.81444
1971-07-01	90.50558
1971-10-01	82.24801
1972-01-01	87.10131
1972-04-01	85.70050
1972-07-01	87.86958
1972-10-01	86.06523
1973-01-01	85.83407
1973-04-01	81.86258
1973-07-01	79.29855
1973-10-01	85.88489
1974-01-01	85.27028
1974-04-01	89.51791
1974-07-01	88.59005
1974-10-01	85.11102
1975-01-01	81.93166
1975-04-01	81.26368
1975-07-01	76.30701
1975-10-01	74.98228
1976-01-01	75.30891
1976-04-01	76.11935
1976-07-01	79.71613
1976-10-01	78.62351
1977-01-01	78.47166
1977-04-01	78.16785
1977-07-01	79.15334
1977-10-01	80.55763
1978-01-01	80.86082
1978-04-01	80.10229
1978-07-01	80.17829
1978-10-01	78.77354
1979-01-01	79.26872
1979-04-01	81.51967
1979-07-01	81.45094
1979-10-01	82.98925
1980-01-01	84.38970
1980-04-01	86.64001
1980-07-01	87.23676
1980-10-01	86.95185
1981-01-01	86.73244
1981-04-01	85.16721
1981-07-01	84.67829
1981-10-01	85.12273
1982-01-01	83.70981
1982-04-01	81.28593
1982-07-01	79.81997
1982-10-01	78.75149
1983-01-01	78.84618
1983-04-01	79.49383
1983-07-01	80.21750
1983-10-01	79.69892
1984-01-01	81.12020
1984-04-01	82.27491
1984-07-01	82.30373
1984-10-01	83.85693
1985-01-01	83.81130
1985-04-01	84.31847
1985-07-01	85.02253
1985-10-01	85.71273
1986-01-01	86.27724
1986-04-01	86.76772
1986-07-01	86.86064
1986-10-01	86.49083
1987-01-01	85.98369
1987-04-01	85.53377
1987-07-01	85.92053
1987-10-01	86.68198
1988-01-01	85.73653
1988-04-01	86.92984
1988-07-01	87.38768
1988-10-01	88.18081
1989-01-01	88.55291
1989-04-01	89.45323
1989-07-01	89.17249
1989-10-01	88.72762
1990-01-01	89.49461
1990-04-01	89.69661
1990-07-01	89.64022
1990-10-01	88.76128
1991-01-01	88.25127
1991-04-01	85.06535
1991-07-01	83.26802
1991-10-01	83.18748
1992-01-01	82.54115
1992-04-01	82.03203
1992-07-01	81.76877
1992-10-01	80.93042
1993-01-01	79.74776
1993-04-01	79.48401
1993-07-01	79.54508
1993-10-01	80.29935
1994-01-01	81.37199
1994-04-01	82.49537
1994-07-01	83.72829
1994-10-01	84.00974
1995-01-01	84.45309
1995-04-01	85.12638
1995-07-01	85.50240
1995-10-01	85.22975
1996-01-01	84.81294
1996-04-01	83.96934
1996-07-01	83.09783
1996-10-01	82.82812
1997-01-01	82.96418
1997-04-01	83.53928
1997-07-01	83.77222
1997-10-01	84.52291
1998-01-01	85.34472
1998-04-01	85.27424
1998-07-01	86.06490
1998-10-01	85.20446
1999-01-01	84.75251
1999-04-01	81.60520
1999-07-01	81.51567
1999-10-01	81.61433
2000-01-01	81.69083
2000-04-01	82.08629
2000-07-01	82.97317
2000-10-01	83.35120
2001-01-01	84.02374
2001-04-01	83.95470
2001-07-01	82.32222
2001-10-01	81.82148
2002-01-01	80.33031
2002-04-01	80.00666
2002-07-01	80.61110
2002-10-01	80.48468
2003-01-01	80.50008
2003-04-01	80.79884
2003-07-01	80.79751
2003-10-01	79.93467
2004-01-01	82.45947
2004-04-01	83.69040
2004-07-01	84.31403
2004-10-01	84.77304
2005-01-01	84.39279
2005-04-01	83.71503
2005-07-01	84.03716
2005-10-01	84.47602
2006-01-01	85.22504
2006-04-01	86.36347
2006-07-01	85.66515
2006-10-01	87.54766
2007-01-01	87.78976
2007-04-01	88.71535
2007-07-01	88.16927
2007-10-01	87.49980
2008-01-01	87.91691
2008-04-01	87.42595
2008-07-01	86.93994
2008-10-01	85.31652
2009-01-01	82.14342
2009-04-01	77.79721
2009-07-01	76.31863
2009-10-01	76.74010
2010-01-01	77.48200
2010-04-01	80.53584
2010-07-01	82.61274
2010-10-01	83.88773
2011-01-01	84.30965
2011-04-01	84.95017
2011-07-01	84.83584
2011-10-01	83.22095
2012-01-01	83.12470
2012-04-01	81.98007
2012-07-01	80.76789
2012-10-01	80.25054
2013-01-01	80.00670
2013-04-01	81.34911
2013-07-01	80.51891
2013-10-01	81.12021
2014-01-01	81.69645
2014-04-01	81.95107
2014-07-01	82.28265
2014-10-01	82.14285
2015-01-01	82.20852
2015-04-01	80.96381
2015-07-01	81.33382
2015-10-01	81.25835
2016-01-01	80.93107
2016-04-01	81.28321
2016-07-01	81.06115
2016-10-01	80.89807
2017-01-01	79.95213
2017-04-01	81.59033
2017-07-01	81.87933
2017-10-01	82.95805
2018-01-01	83.68024
2018-04-01	83.87494
2018-07-01	84.29793
2018-10-01	84.63537