Quarter	Percent of Capacity, Seasonally Adjusted
1961-04-01	89.5254123
1961-07-01	88.6204254
1961-10-01	88.0736229
1962-01-01	87.6166635
1962-04-01	87.6137692
1962-07-01	89.4694099
1962-10-01	89.8558046
1963-01-01	90.7226232
1963-04-01	90.8896452
1963-07-01	90.7954856
1963-10-01	90.7233770
1964-01-01	90.4960330
1964-04-01	90.7840656
1964-07-01	90.7120503
1964-10-01	90.9047584
1965-01-01	91.1451173
1965-04-01	90.8749520
1965-07-01	90.8107618
1965-10-01	90.6653848
1966-01-01	90.8086138
1966-04-01	90.8896505
1966-07-01	90.8346284
1966-10-01	89.5996130
1967-01-01	88.1419090
1967-04-01	86.3960370
1967-07-01	83.8955204
1967-10-01	85.9514612
1968-01-01	86.0235122
1968-04-01	86.6229866
1968-07-01	88.1936758
1968-10-01	89.3534875
1969-01-01	89.4151173
1969-04-01	90.2588587
1969-07-01	90.1661855
1969-10-01	90.7050990
1970-01-01	90.5919455
1970-04-01	90.8588651
1970-07-01	90.4588872
1970-10-01	90.1715409
1971-01-01	89.4887090
1971-04-01	88.9912800
1971-07-01	88.4313036
1971-10-01	87.6558458
1972-01-01	88.4015009
1972-04-01	89.3045134
1972-07-01	91.1027853
1972-10-01	91.1234641
1973-01-01	92.2690724
1973-04-01	91.9858708
1973-07-01	92.0566653
1973-10-01	91.5501122
1974-01-01	92.1426246
1974-04-01	91.4628307
1974-07-01	89.0121450
1974-10-01	88.8833128
1975-01-01	88.1589812
1975-04-01	87.4185025
1975-07-01	88.8825828
1975-10-01	88.7743732
1976-01-01	87.4309585
1976-04-01	87.9271349
1976-07-01	88.8375619
1976-10-01	89.1089303
1977-01-01	88.1523636
1977-04-01	86.4193460
1977-07-01	84.5051139
1977-10-01	84.2680667
1978-01-01	84.8045352
1978-04-01	86.5806656
1978-07-01	87.3524059
1978-10-01	87.6047888
1979-01-01	88.7041897
1979-04-01	88.9929352
1979-07-01	87.8528577
1979-10-01	88.2822987
1980-01-01	86.0690375
1980-04-01	83.6327536
1980-07-01	85.6879207
1980-10-01	85.0887944
1981-01-01	86.3023238
1981-04-01	88.4362540
1981-07-01	88.8655225
1981-10-01	88.3589713
1982-01-01	89.4615826
1982-04-01	87.2404848
1982-07-01	84.7234290
1982-10-01	85.2088682
1983-01-01	84.5287844
1983-04-01	86.3900863
1983-07-01	89.1577490
1983-10-01	89.6911540
1984-01-01	90.4897601
1984-04-01	90.1628360
1984-07-01	90.7872864
1984-10-01	90.7002995
1985-01-01	90.9662482
1985-04-01	90.4220671
1985-07-01	88.4855492
1985-10-01	88.4520728
1986-01-01	86.8856439
1986-04-01	87.2230629
1986-07-01	87.1396823
1986-10-01	87.4770641
1987-01-01	87.6380940
1987-04-01	86.4240488
1987-07-01	85.9818100
1987-10-01	85.4934136
1988-01-01	84.7383198
1988-04-01	85.1184675
1988-07-01	84.9817261
1988-10-01	84.9646579
1989-01-01	85.9218223
1989-04-01	86.9153014
1989-07-01	87.1409695
1989-10-01	87.2016617
1990-01-01	86.7400368
1990-04-01	85.7828639
1990-07-01	86.1772382
1990-10-01	85.1646733
1991-01-01	84.0287541
1991-04-01	83.8240718
1991-07-01	84.5815735
1991-10-01	85.3437019
1992-01-01	87.0285518
1992-04-01	87.2098012
1992-07-01	87.1392532
1992-10-01	88.2032203
1993-01-01	88.8243419
1993-04-01	89.4700441
1993-07-01	89.8168100
1993-10-01	90.0653504
1994-01-01	90.5212493
1994-04-01	90.8425335
1994-07-01	90.8407849
1994-10-01	90.8790908
1995-01-01	90.8289875
1995-04-01	90.7626424
1995-07-01	90.7271394
1995-10-01	91.0043762
1996-01-01	90.2013038
1996-04-01	89.5858565
1996-07-01	89.7653298
1996-10-01	90.1924714
1997-01-01	90.6694331
1997-04-01	87.7228054
1997-07-01	88.0015549
1997-10-01	88.2327043
1998-01-01	88.5006200
1998-04-01	87.1901859
1998-07-01	86.8729614
1998-10-01	87.4926539
1999-01-01	88.1259137
1999-04-01	88.4512313
1999-07-01	88.8712795
1999-10-01	90.7725950
2000-01-01	90.4875865
2000-04-01	89.9254843
2000-07-01	88.9628821
2000-10-01	89.0480055
2001-01-01	90.6562787
2001-04-01	89.7861803
2001-07-01	90.1829124
2001-10-01	89.9638491
2002-01-01	90.6783294
2002-04-01	90.6794559
2002-07-01	90.9866454
2002-10-01	91.4932556
2003-01-01	91.0378944
2003-04-01	91.5260469
2003-07-01	90.0658970
2003-10-01	91.1055897
2004-01-01	92.0589673
2004-04-01	91.9793116
2004-07-01	92.5562517
2004-10-01	92.6165530
2005-01-01	92.2730367
2005-04-01	91.9112907
2005-07-01	91.8895755
2005-10-01	91.5398284
2006-01-01	91.3660883
2006-04-01	91.3554179
2006-07-01	92.2989366
2006-10-01	91.7115889
2007-01-01	91.8179347
2007-04-01	91.5644880
2007-07-01	91.3369865
2007-10-01	92.0377254
2008-01-01	92.6204740
2008-04-01	92.3725550
2008-07-01	90.7933775
2008-10-01	88.7805796
2009-01-01	86.3286125
2009-04-01	90.6948355
2009-07-01	88.4178098
2009-10-01	91.0723716
2010-01-01	90.5378305
2010-04-01	90.6396700
2010-07-01	90.3873048
2010-10-01	88.9853064
2011-01-01	89.3850492
2011-04-01	88.7256105
2011-07-01	89.6275720
2011-10-01	90.1521479
2012-01-01	89.0713867
2012-04-01	89.2800624
2012-07-01	89.8264385
2012-10-01	90.4870544
2013-01-01	91.4677295
2013-04-01	91.7999766
2013-07-01	91.4364897
2013-10-01	90.9387724
2014-01-01	89.3996727
2014-04-01	90.6347612
2014-07-01	90.5667683
2014-10-01	91.9674551
2015-01-01	92.3124475
2015-04-01	93.3555534
2015-07-01	92.3138084
2015-10-01	93.2409890
2016-01-01	93.2054437
2016-04-01	92.8803368
2016-07-01	92.5175973
2016-10-01	92.6967220
2017-01-01	93.6093751
2017-04-01	92.1445545
2017-07-01	91.3425941
2017-10-01	92.7769578
2018-01-01	93.5012904
2018-04-01	92.8341693
2018-07-01	94.4000000