Quarter	Net Percent, Seasonally Adjusted
1965-04-01	83.41
1965-07-01	83.26
1965-10-01	82.93
1966-01-01	83.37
1966-04-01	83.47
1966-07-01	83.23
1966-10-01	82.92
1967-01-01	82.36
1967-04-01	81.52
1967-07-01	80.23
1967-10-01	80.87
1968-01-01	77.33
1968-04-01	79.62
1968-07-01	80.20
1968-10-01	80.84
1969-01-01	81.27
1969-04-01	81.72
1969-07-01	85.21
1969-10-01	83.79
1970-01-01	84.22
1970-04-01	84.82
1970-07-01	83.17
1970-10-01	83.80
1971-01-01	83.19
1971-04-01	81.85
1971-07-01	82.15
1971-10-01	81.80
1972-01-01	83.23
1972-04-01	83.83
1972-07-01	86.09
1972-10-01	88.84
1973-01-01	88.30
1973-04-01	90.77
1973-07-01	89.05
1973-10-01	87.84
1974-01-01	87.42
1974-04-01	86.69
1974-07-01	85.98
1974-10-01	82.90
1975-01-01	80.48
1975-04-01	79.65
1975-07-01	77.91
1975-10-01	79.96
1976-01-01	80.51
1976-04-01	80.65
1976-07-01	80.81
1976-10-01	82.09
1977-01-01	82.45
1977-04-01	83.66
1977-07-01	83.71
1977-10-01	82.27
1978-01-01	81.39
1978-04-01	79.58
1978-07-01	79.66
1978-10-01	80.51
1979-01-01	80.31
1979-04-01	78.97
1979-07-01	80.65
1979-10-01	80.28
1980-01-01	79.12
1980-04-01	78.95
1980-07-01	78.65
1980-10-01	78.28
1981-01-01	79.16
1981-04-01	78.88
1981-07-01	77.69
1981-10-01	79.27
1982-01-01	79.17
1982-04-01	79.85
1982-07-01	81.76
1982-10-01	79.16
1983-01-01	79.21
1983-04-01	80.92
1983-07-01	77.74
1983-10-01	78.58
1984-01-01	78.19
1984-04-01	79.08
1984-07-01	78.75
1984-10-01	77.88
1985-01-01	78.20
1985-04-01	77.30
1985-07-01	77.67
1985-10-01	77.76
1986-01-01	77.13
1986-04-01	78.06
1986-07-01	78.62
1986-10-01	78.98
1987-01-01	79.26
1987-04-01	79.50
1987-07-01	76.70
1987-10-01	79.20
1988-01-01	78.90
1988-04-01	79.20
1988-07-01	80.80
1988-10-01	79.10
1989-01-01	81.60
1989-04-01	81.10
1989-07-01	82.30
1989-10-01	81.40
1990-01-01	80.80
1990-04-01	79.80
1990-07-01	80.70
1990-10-01	80.60
1991-01-01	78.70
1991-04-01	78.10
1991-07-01	77.40
1991-10-01	78.30
1992-01-01	76.90
1992-04-01	75.80
1992-07-01	78.60
1992-10-01	76.90
1993-01-01	74.40
1993-04-01	74.40
1993-07-01	71.60
1993-10-01	72.60
1994-01-01	76.30
1994-04-01	75.40
1994-07-01	75.90
1994-10-01	78.00
1995-01-01	78.40
1995-04-01	79.70
1995-07-01	78.20
1995-10-01	78.00
1996-01-01	76.30
1996-04-01	77.80
1996-07-01	77.20
1996-10-01	76.20
1997-01-01	77.40
1997-04-01	80.40
1997-07-01	80.40
1997-10-01	80.50
1998-01-01	81.00
1998-04-01	82.00
1998-07-01	81.20
1998-10-01	81.50
1999-01-01	80.40
1999-04-01	79.80
1999-07-01	79.70
1999-10-01	81.40
2000-01-01	80.20
2000-04-01	80.90
2000-07-01	80.90
2000-10-01	80.60
2001-01-01	79.70
2001-04-01	80.60
2001-07-01	79.00
2001-10-01	77.70
2002-01-01	78.30
2002-04-01	76.60
2002-07-01	79.00
2002-10-01	80.20
2003-01-01	79.10
2003-04-01	77.50
2003-07-01	79.60
2003-10-01	79.90
2004-01-01	79.70
2004-04-01	79.50
2004-07-01	80.00
2004-10-01	79.60
2005-01-01	80.20
2005-04-01	80.00
2005-07-01	80.60
2005-10-01	80.20
2006-01-01	80.60
2006-04-01	81.40
2006-07-01	79.80
2006-10-01	81.00
2007-01-01	81.50
2007-04-01	82.00
2007-07-01	82.00
2007-10-01	80.50
2008-01-01	81.20
2008-04-01	80.40
2008-07-01	79.40
2008-10-01	76.80
2009-01-01	73.30
2009-04-01	70.00
2009-07-01	67.90
2009-10-01	68.80
2010-01-01	68.40
2010-04-01	70.90
2010-07-01	72.60
2010-10-01	72.50
2011-01-01	73.50
2011-04-01	74.70
2011-07-01	72.60
2011-10-01	72.20
2012-01-01	72.50
2012-04-01	72.70
2012-07-01	70.70
2012-10-01	72.50
2013-01-01	68.70
2013-04-01	74.60
2013-07-01	76.20
2013-10-01	73.50
2014-01-01	77.00
2014-04-01	74.10
2014-07-01	75.30
2014-10-01	76.90
2015-01-01	78.10
2015-04-01	77.20
2015-07-01	77.60
2015-10-01	78.10
2016-01-01	79.00
2016-04-01	77.80
2016-07-01	78.40
2016-10-01	79.10
2017-01-01	78.80
2017-04-01	78.10
2017-07-01	78.70
2017-10-01	79.10
2018-01-01	79.70
2018-04-01	80.30
2018-07-01	79.30
2018-10-01	78.60