Monthly Percent
1997-01-01 25.38
1997-02-01 23.54
1997-03-01 23.73
1997-04-01 23.97
1997-05-01 21.73
1997-06-01 22.41
1997-07-01 20.73
1997-08-01 21.27
1997-09-01 21.27
1997-10-01 20.47
1997-11-01 22.55
1997-12-01 20.48
1998-01-01 19.95
1998-02-01 20.67
1998-03-01 21.83
1998-04-01 20.44
1998-05-01 20.27
1998-06-01 21.79
1998-07-01 22.66
1998-08-01 27.20
1998-09-01 40.35
1998-10-01 38.69
1998-11-01 35.56
1998-12-01 36.29
1999-01-01 35.45
1999-02-01 31.35
1999-03-01 26.37
1999-04-01 22.99
1999-05-01 23.26
1999-06-01 23.77
1999-07-01 22.98
1999-08-01 24.36
1999-09-01 23.43
1999-10-01 22.41
1999-11-01 20.09
1999-12-01 19.06
2000-01-01 18.69
2000-02-01 18.12
2000-03-01 15.86
2000-04-01 15.10
2000-05-01 16.77
2000-06-01 17.73
2000-07-01 15.40
2000-08-01 16.84
2000-09-01 17.13
2000-10-01 17.99
2000-11-01 18.76
2000-12-01 18.39
2001-01-01 18.86
2001-02-01 18.36
2001-03-01 17.22
2001-04-01 16.31
2001-05-01 14.22
2001-06-01 11.90
2001-07-01 11.60
2001-08-01 10.22
2001-09-01 12.19
2001-10-01 11.16
2001-11-01 10.21
2001-12-01 8.87
2002-01-01 8.44
2002-02-01 9.06
2002-03-01 8.61
2002-04-01 7.12
2002-05-01 7.63
2002-06-01 8.65
2002-07-01 8.73
2002-08-01 7.95
2002-09-01 8.74
2002-10-01 9.10
2002-11-01 8.73
2002-12-01 8.64
2003-01-01 9.38
2003-02-01 9.85
2003-03-01 10.04
2003-04-01 8.70
2003-05-01 6.74
2003-06-01 6.19
2003-07-01 5.70
2003-08-01 5.54
2003-09-01 5.50
2003-10-01 5.93
2003-11-01 5.83
2003-12-01 6.57
2004-01-01 5.55
2004-02-01 6.07
2004-03-01 6.55
2004-04-01 6.37
2004-05-01 7.31
2004-06-01 7.59
2004-07-01 7.63
2004-08-01 7.84
2004-09-01 8.06
2004-10-01 8.46
2004-11-01 8.85
2004-12-01 9.03
2005-01-01 9.03
2005-02-01 9.59
2005-03-01 9.98
2005-04-01 10.22
2005-05-01 10.21
2005-06-01 10.01
2005-07-01 10.03
2005-08-01 10.03
2005-09-01 9.45
2005-10-01 9.25
2005-11-01 9.14
2005-12-01 8.64
2006-01-01 8.16
2006-02-01 7.93
2006-03-01 7.78
2006-04-01 7.72
2006-05-01 7.59
2006-06-01 7.68
2006-07-01 7.57
2006-08-01 7.48
2006-09-01 7.50
2006-10-01 7.65
2006-11-01 7.62
2006-12-01 7.60
2007-01-01 7.67
2007-02-01 7.67
2007-03-01 7.68
2007-04-01 7.61
2007-05-01 7.83
2007-06-01 7.82
2007-07-01 7.78
2007-08-01 7.79
2007-09-01 7.77
2007-10-01 7.78
2007-11-01 8.01
2007-12-01 8.00
2008-01-01 7.99
2008-02-01 7.93
2008-03-01 7.94
2008-04-01 7.96
2008-05-01 7.96
2008-06-01 8.10
2008-07-01 8.49
2008-08-01 8.71
2008-09-01 8.74
2008-10-01 8.76
2008-11-01 8.83
2008-12-01 8.82
2009-01-01 8.41
2009-02-01 7.86
2009-03-01 7.54
2009-04-01 6.50
2009-05-01 5.65
2009-06-01 5.18
2009-07-01 4.91
2009-08-01 4.95
2009-09-01 5.00
2009-10-01 5.00
2009-11-01 5.08
2009-12-01 5.07
2010-01-01 5.06
2010-02-01 5.03
2010-03-01 5.03
2010-04-01 5.03
2010-05-01 5.04
2010-06-01 5.01
2010-07-01 5.01
2010-08-01 4.99
2010-09-01 4.98
2010-10-01 4.95
2010-11-01 4.92
2010-12-01 4.95
2011-01-01 4.92
2011-02-01 4.88
2011-03-01 4.87
2011-04-01 4.88
2011-05-01 4.88
2011-06-01 4.89
2011-07-01 4.86
2011-08-01 4.85
2011-09-01 4.80
2011-10-01 4.81
2011-11-01 4.81
2011-12-01 4.81
2012-01-01 4.80
2012-02-01 4.80
2012-03-01 4.79
2012-04-01 4.76
2012-05-01 4.78
2012-06-01 4.78
2012-07-01 4.79
2012-08-01 4.80
2012-09-01 4.82
2012-10-01 4.84
2012-11-01 4.86
2012-12-01 4.86
2013-01-01 4.86
2013-02-01 4.82
2013-03-01 4.49
2013-04-01 4.34
2013-05-01 4.32
2013-06-01 4.31
2013-07-01 4.32
2013-08-01 4.31
2013-09-01 4.11
2013-10-01 3.97
2013-11-01 3.79
2013-12-01 3.79
2014-01-01 3.80
2014-02-01 3.80
2014-03-01 3.81
2014-04-01 3.81
2014-05-01 3.82
2014-06-01 3.44
2014-07-01 3.31
2014-08-01 3.31
2014-09-01 3.30
2014-10-01 3.30
2014-11-01 3.30
2014-12-01 3.31
2015-01-01 3.31
2015-02-01 3.31
2015-03-01 3.33
2015-04-01 3.31
2015-05-01 3.31
2015-06-01 3.31
2015-07-01 3.32
2015-08-01 3.35
2015-09-01 3.36
2015-10-01 3.32
2015-11-01 3.38
2015-12-01 3.50
2016-01-01 3.59
2016-02-01 3.78
2016-03-01 4.11
2016-04-01 4.12
2016-05-01 4.14
2016-06-01 4.21
2016-07-01 4.66
2016-08-01 4.69
2016-09-01 4.72
2016-10-01 5.19
2016-11-01 5.59
2016-12-01 6.02
2017-01-01 6.28
2017-02-01 6.57
2017-03-01 6.78
2017-04-01 6.93
2017-05-01 7.05
2017-06-01 7.31
2017-07-01 7.38
2017-08-01 7.39
2017-09-01 7.39
2017-10-01 7.40
2017-11-01 7.41
2017-12-01 7.56
2018-01-01 7.70
2018-02-01 7.84
2018-03-01 7.86
2018-04-01 7.86
2018-05-01 7.89
2018-06-01 8.02
2018-07-01 8.15
2018-08-01 8.14
2018-09-01 8.17
2018-10-01 8.17