Quarterly Percent of Capacity, Seasonally Adjusted
1985-01-01 74
1985-04-01 71.5
1985-07-01 73.2
1985-10-01 75.1
1986-01-01 75.6
1986-04-01 76.4
1986-07-01 76.7
1986-10-01 76.2
1987-01-01 76.7
1987-04-01 76.4
1987-07-01 77.4
1987-10-01 74.3
1988-01-01 71.7
1988-04-01 74.8
1988-07-01 74.9
1988-10-01 77.3
1989-01-01 76.9
1989-04-01 78.8
1989-07-01 78.9
1989-10-01 77.2
1990-01-01 77.3
1990-04-01 76.2
1990-07-01 77.9
1990-10-01 76.6
1991-01-01 78.6
1991-04-01 76.9
1991-07-01 77.3
1991-10-01 77.9
1992-01-01 78.3
1992-04-01 76.6
1992-07-01 77.1
1992-10-01 77.5
1993-01-01 76.9
1993-04-01 76.5
1993-07-01 74.3
1993-10-01 75.3
1994-01-01 74.7
1994-04-01 74.7
1994-07-01 75.4
1994-10-01 75.1
1995-01-01 75.3
1995-04-01 77.4
1995-07-01 77.7
1995-10-01 77.2
1996-01-01 74.9
1996-04-01 75.7
1996-07-01 76.6
1996-10-01 75
1997-01-01 73.8
1997-04-01 73.1
1997-07-01 74.6
1997-10-01 73.5
1998-01-01 75.9
1998-04-01 78
1998-07-01 75.2
1998-10-01 74.5
1999-01-01 75.3
1999-04-01 76
1999-07-01 74.6
1999-10-01 77.6
2000-01-01 79
2000-04-01 77.6
2000-07-01 77.4
2000-10-01 79.2
2001-01-01 78.8
2001-04-01 79.1
2001-07-01 76.5
2001-10-01 76.8
2002-01-01 75.3
2002-04-01 76.7
2002-07-01 79
2002-10-01 76.9
2003-01-01 75.8
2003-04-01 77.2
2003-07-01 76.7
2003-10-01 76
2004-01-01 77.5
2004-04-01 74.7
2004-07-01 76.3
2004-10-01 74.2
2005-01-01 71.9
2005-04-01 72.5
2005-07-01 71.9
2005-10-01 72.2
2006-01-01 74.2
2006-04-01 74.6
2006-07-01 77.2
2006-10-01 76.7
2007-01-01 76.9
2007-04-01 76.9
2007-07-01 76.7
2007-10-01 77.1
2008-01-01 76.7
2008-04-01 77.2
2008-07-01 76.2
2008-10-01 75.4
2009-01-01 73.4
2009-04-01 70.3
2009-07-01 68.3
2009-10-01 70.6
2010-01-01 69
2010-04-01 69.7
2010-07-01 66.6
2010-10-01 67.1
2011-01-01 69.5
2011-04-01 68.8
2011-07-01 67.5
2011-10-01 65.8
2012-01-01 65.5
2012-04-01 64.9
2012-07-01 63.9
2012-10-01 65.1
2013-01-01 65.3
2013-04-01 64
2013-07-01 64.9
2013-10-01 65.9
2014-01-01 65.9
2014-04-01 67.7
2014-07-01 70.4
2014-10-01 66.7
2015-01-01 69.2
2015-04-01 67.7
2015-07-01 63.5
2015-10-01 64.2
2016-01-01 65.5
2016-04-01 67.8
2016-07-01 67.8
2016-10-01 69.3
2017-01-01 68.6
2017-04-01 68.1
2017-07-01 72.0
2017-10-01 71.2
2018-01-01 70.4
2018-04-01 71.2
2018-07-01 70.7
2018-10-01 70.9