Quarter	Percent of Capacity, Seasonally Adjusted
1996-01-01	84.8
1996-04-01	83.7
1996-07-01	83.6
1996-10-01	84.1
1997-01-01	83.9
1997-04-01	85.1
1997-07-01	86.1
1997-10-01	86.5
1998-01-01	87.1
1998-04-01	87.8
1998-07-01	88
1998-10-01	86.6
1999-01-01	85.5
1999-04-01	84.8
1999-07-01	83.8
1999-10-01	85.9
2000-01-01	87
2000-04-01	88
2000-07-01	88.9
2000-10-01	88.9
2001-01-01	88.5
2001-04-01	87.2
2001-07-01	86.4
2001-10-01	84.2
2002-01-01	84.4
2002-04-01	84.7
2002-07-01	84.8
2002-10-01	83.8
2003-01-01	85.2
2003-04-01	86.1
2003-07-01	85.4
2003-10-01	86.3
2004-01-01	85.4
2004-04-01	85.7
2004-07-01	86.9
2004-10-01	87.2
2005-01-01	87.2
2005-04-01	86
2005-07-01	85
2005-10-01	85.5
2006-01-01	85.9
2006-04-01	87
2006-07-01	88.3
2006-10-01	88.7
2007-01-01	88.3
2007-04-01	88.7
2007-07-01	88.3
2007-10-01	88.4
2008-01-01	87.5
2008-04-01	87.7
2008-07-01	86.2
2008-10-01	85.1
2009-01-01	80.2
2009-04-01	75.9
2009-07-01	75.9
2009-10-01	77.7
2010-01-01	78.7
2010-04-01	82
2010-07-01	83.2
2010-10-01	83.7
2011-01-01	84.6
2011-04-01	86.3
2011-07-01	85.8
2011-10-01	85
2012-01-01	85.1
2012-04-01	84.7
2012-07-01	84.9
2012-10-01	83.6
2013-01-01	84.9
2013-04-01	83.5
2013-07-01	83.5
2013-10-01	82.6
2014-01-01	84.1
2014-04-01	85.1
2014-07-01	84.2
2014-10-01	83.7
2015-01-01	84.1
2015-04-01	84.2
2015-07-01	84.4
2015-10-01	83.4
2016-01-01	85.0
2016-04-01	84.0
2016-07-01	83.2
2016-10-01	85.1
2017-01-01	85.1
2017-04-01	86.6
2017-07-01	86.9
2017-10-01	88.0
2018-01-01	88.8
2018-04-01	88.7
2018-07-01	88.7
2018-10-01	88.5