Month	Percent
1990-01-01	0.300000000
1990-02-01	0.900000000
1990-03-01	1.500000000
1990-04-01	2.000000000
1990-05-01	2.500000000
1990-06-01	3.200000000
1990-07-01	3.900000000
1990-08-01	4.600000000
1990-09-01	5.200000000
1990-10-01	5.700000000
1990-11-01	6.100000000
1990-12-01	6.300000000
1991-01-01	6.800000002
1991-02-01	7.000000002
1991-03-01	7.300000002
1991-04-01	7.500000002
1991-05-01	7.900000002
1991-06-01	8.600000002
1991-07-01	9.600000002
1991-08-01	10.100000000
1991-09-01	10.700000000
1991-10-01	11.100000000
1991-11-01	11.400000000
1991-12-01	11.800000000
1992-01-01	12.100000000
1992-02-01	12.400000000
1992-03-01	12.100000000
1992-04-01	12.200000000
1992-05-01	12.300000000
1992-06-01	12.600000000
1992-07-01	13.100000000
1992-08-01	13.400000000
1992-09-01	13.600000000
1992-10-01	13.500000000
1992-11-01	13.500000000
1992-12-01	13.600000000
1993-01-01	14.200000000
1993-02-01	14.400000000
1993-03-01	14.400000000
1993-04-01	14.400000000
1993-05-01	14.300000000
1993-06-01	14.800000000
1993-07-01	15.400000000
1993-08-01	15.400000000
1993-09-01	15.400000000
1993-10-01	15.300000000
1993-11-01	15.500000000
1993-12-01	15.700000000
1994-01-01	16.700000000
1994-02-01	16.800000000
1994-03-01	16.700000000
1994-04-01	16.400000000
1994-05-01	16.200000000
1994-06-01	16.600000000
1994-07-01	16.900000000
1994-08-01	16.800000000
1994-09-01	16.500000000
1994-10-01	16.200000000
1994-11-01	16.100000000
1994-12-01	16.000000000
1995-01-01	16.100000000
1995-02-01	15.900000000
1995-03-01	15.500000000
1995-04-01	15.200000000
1995-05-01	14.800000000
1995-06-01	15.200000000
1995-07-01	15.300000000
1995-08-01	15.200000000
1995-09-01	15.000000000
1995-10-01	14.700000000
1995-11-01	14.700000000
1995-12-01	14.900000000
1996-01-01	15.400000000
1996-02-01	15.500000000
1996-03-01	15.400000000
1996-04-01	15.100000000
1996-05-01	14.700000000
1996-06-01	14.300000000
1996-07-01	14.100000000
1996-08-01	13.800000000
1996-09-01	13.500000000
1996-10-01	13.200000000
1996-11-01	13.300000000
1996-12-01	13.200000000
1997-01-01	13.100000000
1997-02-01	13.000000000
1997-03-01	12.600000000
1997-04-01	12.100000000
1997-05-01	11.700000000
1997-06-01	11.600000000
1997-07-01	11.300000000
1997-08-01	11.000000000
1997-09-01	10.600000000
1997-10-01	10.300000000
1997-11-01	10.300000000
1997-12-01	10.300000000
1998-01-01	10.700000000
1998-02-01	10.600000000
1998-03-01	10.400000000
1998-04-01	10.000000000
1998-05-01	9.700000000
1998-06-01	9.600000000
1998-07-01	9.600000000
1998-08-01	9.500000000
1998-09-01	9.600000000
1998-10-01	9.700000000
1998-11-01	9.900000000
1998-12-01	10.400000000
1999-01-01	11.400000000
1999-02-01	11.900000000
1999-03-01	12.000000000
1999-04-01	11.800000000
1999-05-01	11.600000000
1999-06-01	11.600000000
1999-07-01	11.800000000
1999-08-01	11.900000000
1999-09-01	12.100000000
1999-10-01	12.200000000
1999-11-01	12.500000000
1999-12-01	13.100000000
2000-01-01	13.700000000
2000-02-01	14.000000000
2000-03-01	14.000000000
2000-04-01	13.800000000
2000-05-01	13.600000000
2000-06-01	13.600000000
2000-07-01	13.800000000
2000-08-01	13.900000000
2000-09-01	14.000000000
2000-10-01	14.100000000
2000-11-01	14.500000000
2000-12-01	15.100000000
2001-01-01	15.700000000
2001-02-01	15.900000000
2001-03-01	16.100000000
2001-04-01	16.000000000
2001-05-01	15.900000000
2001-06-01	15.900000000
2001-07-01	16.000000000
2001-08-01	16.200000000
2001-09-01	16.300000000
2001-10-01	16.400000000
2001-11-01	16.800000000
2001-12-01	17.500000000
2002-01-01	20.100000000
2002-02-01	20.200000000
2002-03-01	20.100000000
2002-04-01	19.900000000
2002-05-01	19.200000000
2002-06-01	19.400000000
2002-07-01	19.400000000
2002-08-01	19.500000000
2002-09-01	19.500000000
2002-10-01	19.500000000
2002-11-01	19.700000000
2002-12-01	20.000000000
2003-01-01	20.600000000
2003-02-01	20.700000000
2003-03-01	20.600000000
2003-04-01	20.300000000
2003-05-01	19.800000000
2003-06-01	19.700000000
2003-07-01	19.600000000
2003-08-01	19.500000000
2003-09-01	19.400000000
2003-10-01	19.300000000
2003-11-01	19.500000000
2003-12-01	20.000000000
2004-01-01	20.600000000
2004-02-01	20.600000000
2004-03-01	20.400000000
2004-04-01	19.900000000
2004-05-01	19.500000000
2004-06-01	19.400000000
2004-07-01	19.300000000
2004-08-01	19.100000000
2004-09-01	18.900000000
2004-10-01	18.700000000
2004-11-01	18.700000000
2004-12-01	19.000000000
2005-01-01	19.400000000
2005-02-01	19.400000000
2005-03-01	19.200000000
2005-04-01	18.700000000
2005-05-01	18.200000000
2005-06-01	18.000000000
2005-07-01	17.900000000
2005-08-01	17.700000000
2005-09-01	17.600000000
2005-10-01	17.300000000
2005-11-01	17.300000000
2005-12-01	17.600000000
2006-01-01	18.000000000
2006-02-01	18.000000000
2006-03-01	17.800000000
2006-04-01	17.200000000
2006-05-01	16.500000000
2006-06-01	15.900000000
2006-07-01	15.700000000
2006-08-01	15.500000000
2006-09-01	15.200000000
2006-10-01	14.900000000
2006-11-01	14.800000000
2006-12-01	14.800000000
2007-01-01	15.100000000
2007-02-01	14.800000000
2007-03-01	14.300000000
2007-04-01	13.600000000
2007-05-01	12.900000000
2007-06-01	12.300000000
2007-07-01	12.100000000
2007-08-01	11.900000000
2007-09-01	11.600000000
2007-10-01	11.300000000
2007-11-01	11.200000000
2007-12-01	11.200000000
2008-01-01	11.500000000
2008-02-01	11.300000000
2008-03-01	10.900000000
2008-04-01	10.300000000
2008-05-01	9.800000000
2008-06-01	9.400000000
2008-07-01	9.200000000
2008-08-01	9.100000000
2008-09-01	8.900000000
2008-10-01	8.800000000
2008-11-01	9.100000000
2008-12-01	9.500000000
2009-01-01	10.400000000
2009-02-01	10.900000000
2009-03-01	11.100000000
2009-04-01	10.900000000
2009-05-01	10.700000000
2009-06-01	10.600000000
2009-07-01	10.700000000
2009-08-01	10.800000000
2009-09-01	10.900000000
2009-10-01	11.100000000
2009-11-01	11.400000000
2009-12-01	12.100000000
2010-01-01	12.900000000
2010-02-01	13.200000000
2010-03-01	13.000000000
2010-04-01	12.400000000
2010-05-01	12.100000000
2010-06-01	11.700000000
2010-07-01	11.500000000
2010-08-01	11.400000000
2010-09-01	11.500000000
2010-10-01	11.500000000
2010-11-01	11.700000000
2010-12-01	12.400000000
2011-01-01	13.100000000
2011-02-01	13.400000000
2011-03-01	13.300000000
2011-04-01	12.800000000
2011-05-01	12.400000000
2011-06-01	11.900000000
2011-07-01	11.800000000
2011-08-01	11.800000000
2011-09-01	11.800000000
2011-10-01	11.800000000
2011-11-01	12.100000000
2011-12-01	12.500000000
2012-01-01	13.200000000
2012-02-01	13.400000000
2012-03-01	13.300000000
2012-04-01	12.900000000
2012-05-01	12.600000000
2012-06-01	12.300000000
2012-07-01	12.300000000
2012-08-01	12.400000000
2012-09-01	12.400000000
2012-10-01	12.500000000
2012-11-01	12.900000000
2012-12-01	13.400000000
2013-01-01	14.200000000
2013-02-01	14.400000000
2013-03-01	14.300000000
2013-04-01	14.000000000
2013-05-01	13.600000000
2013-06-01	13.200000000
2013-07-01	13.100000000
2013-08-01	13.000000000
2013-09-01	13.000000000
2013-10-01	13.000000000
2013-11-01	13.200000000
2013-12-01	13.400000000
2014-01-01	13.900000000
2014-02-01	13.900000000
2014-03-01	13.500000000
2014-04-01	13.000000000
2014-05-01	12.500000000
2014-06-01	12.000000000
2014-07-01	11.800000000
2014-08-01	11.700000000
2014-09-01	11.500000000
2014-10-01	11.300000000
2014-11-01	11.400000000
2014-12-01	11.400000000
2015-01-01	11.900000000
2015-02-01	11.900000000
2015-03-01	11.500000000
2015-04-01	11.100000000
2015-05-01	10.700000000
2015-06-01	10.200000000
2015-07-01	10.000000000
2015-08-01	9.900000000
2015-09-01	9.700000000
2015-10-01	9.600000000
2015-11-01	9.600000000
2015-12-01	9.700000000
2016-01-01	10.200000000
2016-02-01	10.200000000
2016-03-01	9.900000000
2016-04-01	9.400000000
2016-05-01	9.100000000
2016-06-01	8.700000000
2016-07-01	8.500000000
2016-08-01	8.400000000
2016-09-01	8.300000000
2016-10-01	8.200000000
2016-11-01	8.200000000
2016-12-01	8.200000000
2017-01-01	8.500000000
2017-02-01	8.400000000
2017-03-01	8.000000000
2017-04-01	7.600000000
2017-05-01	7.300000000
2017-06-01	7.000000000
2017-07-01	7.000000000
2017-08-01	7.000000000
2017-09-01	6.800000000
2017-10-01	6.600000000
2017-11-01	6.500000000
2017-12-01	6.600000000
2018-01-01	6.800000000
2018-02-01	6.800000000
2018-03-01	6.600000000
2018-04-01	6.300000000
2018-05-01	6.100000000
2018-06-01	5.800000000
2018-07-01	5.800000000
2018-08-01	5.800000000
2018-09-01	5.700000000