Quarter	Percent of Capacity, Seasonally Adjusted
1993-04-01	52.5
1993-07-01	54.5
1993-10-01	52.2
1994-01-01	54.8
1994-04-01	56.5
1994-07-01	57.5
1994-10-01	58.2
1995-01-01	55.8
1995-04-01	57.5
1995-07-01	55.6
1995-10-01	58.1
1996-01-01	58.8
1996-04-01	55.5
1996-07-01	56.5
1996-10-01	58.9
1997-01-01	59.8
1997-04-01	62.6
1997-07-01	63.9
1997-10-01	63.1
1998-01-01	66.7
1998-04-01	67.8
1998-07-01	70
1998-10-01	68.6
1999-01-01	64.4
1999-04-01	63.8
1999-07-01	61.5
1999-10-01	64.2
2000-01-01	64.4
2000-04-01	67.3
2000-07-01	66.4
2000-10-01	68.7
2001-01-01	68.8
2001-04-01	72.4
2001-07-01	75.5
2001-10-01	73.7
2002-01-01	71
2002-04-01	75.2
2002-07-01	75.3
2002-10-01	76.5
2003-01-01	73.6
2003-04-01	74.2
2003-07-01	73.1
2003-10-01	73.8
2004-01-01	73
2004-04-01	75.5
2004-07-01	74.3
2004-10-01	74.8
2005-01-01	75.7
2005-04-01	77.5
2005-07-01	77.6
2005-10-01	78
2006-01-01	79.4
2006-04-01	79.1
2006-07-01	78.5
2006-10-01	78
2007-01-01	78.4
2007-04-01	77.6
2007-07-01	77.2
2007-10-01	74.9
2008-01-01	74.3
2008-04-01	72.3
2008-07-01	69.4
2008-10-01	66.6
2009-01-01	61
2009-04-01	56.9
2009-07-01	56.5
2009-10-01	58
2010-01-01	61.6
2010-04-01	66.6
2010-07-01	68.8
2010-10-01	71.2
2011-01-01	73.5
2011-04-01	73.4
2011-07-01	73
2011-10-01	73.2
2012-01-01	70.5
2012-04-01	69
2012-07-01	71.3
2012-10-01	70.1
2013-01-01	70.5
2013-04-01	70.8
2013-07-01	71.5
2013-10-01	72.5
2014-01-01	72.3
2014-04-01	72.6
2014-07-01	74
2014-10-01	73.2
2015-01-01	71.2
2015-04-01	70.7
2015-07-01	72.7
2015-10-01	71.0
2016-01-01	72.5
2016-04-01	73.8
2016-07-01	73.0
2016-10-01	75.0
2017-01-01	74.4
2017-04-01	76.4
2017-07-01	73.9
2017-10-01	74.8
2018-01-01	75.5
2018-04-01	73.9
2018-07-01	75.2
2018-10-01	73.0