Monthly Percent
1997-07-01 12.54
1997-08-01 13.77
1997-09-01 13.47
1997-10-01 14.82
1997-11-01 13.04
1997-12-01 10.63
1998-01-01 19.17
1998-02-01 18.23
1998-03-01 14.36
1998-04-01 15.72
1998-05-01 14.75
1998-06-01 14.86
1998-07-01 16.48
1998-08-01 18.65
1998-10-01 18.78
1998-11-01 14.89
1998-12-01 13.49
1999-01-01 12.75
1999-02-01 10.04
1999-03-01 11.09
1999-04-01 13.59
1999-05-01 11.71
1999-06-01 9.28
1999-07-01 9.76
1999-08-01 9.93
1999-09-01 9.91
1999-10-01 10.68
1999-11-01 11.63
1999-12-01 11.09
2000-01-01 10.05
2000-02-01 12.17
2000-03-01 13.43
2000-04-01 11.76
2000-05-01 10.67
2000-06-01 9.72
2000-07-01 9.90
2000-08-01 9.37
2000-09-01 10.32
2000-10-01 11.50
2000-11-01 10.90
2000-12-01 9.30
2001-01-01 8.30
2001-02-01 8.06
2001-03-01 6.14
2001-04-01 8.62
2001-05-01 8.69
2001-06-01 6.74
2001-07-01 6.44
2001-08-01 7.07
2001-09-01 7.18
2001-10-01 6.61
2001-11-01 6.44
2001-12-01 6.51
2002-01-01 6.00
2002-02-01 5.56
2002-03-01 4.73
2002-04-01 4.39
2002-05-01 4.15
2002-06-01 4.03
2002-07-01 3.51
2002-08-01 2.96
2002-09-01 2.99
2002-10-01 3.03
2002-11-01 2.87
2002-12-01 2.88
2003-01-01 2.97
2003-02-01 2.94
2003-03-01 2.65
2003-04-01 2.48
2003-05-01 2.59
2003-06-01 2.78
2003-07-01 2.97
2003-08-01 2.94
2003-09-01 2.84
2003-10-01 2.75
2003-11-01 2.72
2003-12-01 2.58
2004-01-01 1.80
2004-02-01 1.58
2004-03-01 1.57
2004-04-01 1.49
2004-05-01 1.31
2004-06-01 1.53
2004-07-01 1.66
2004-08-01 1.68
2004-09-01 2.33
2004-10-01 2.35
2004-11-01 2.34
2004-12-01 2.32
2005-01-01 2.49
2005-02-01 2.95
2005-03-01 2.83
2005-04-01 2.92
2005-05-01 3.24
2005-06-01 2.85
2005-07-01 3.01
2005-08-01 3.83
2005-09-01 4.25
2005-10-01 4.52
2005-11-01 4.73
2005-12-01 4.75
2006-01-01 4.64
2006-02-01 4.39
2006-03-01 4.48
2006-04-01 4.50
2006-05-01 4.64
2006-06-01 4.82
2006-07-01 4.92
2006-08-01 5.20
2006-09-01 5.21
2006-10-01 4.95
2006-11-01 5.06
2006-12-01 5.10
2007-01-01 5.04
2007-02-01 4.84
2007-03-01 4.61
2007-04-01 4.75
2007-05-01 4.86
2007-06-01 4.75
2007-07-01 4.87
2007-08-01 5.45
2007-09-01 5.50
2007-10-01 5.41
2007-11-01 5.92
2007-12-01 6.15
2008-01-01 6.50
2008-02-01 6.60
2008-03-01 6.61
2008-04-01 6.61
2008-05-01 6.68
2008-06-01 7.32
2008-07-01 7.57
2008-11-01 8.36
2008-12-01 8.18
2009-01-01 6.74
2009-02-01 4.43
2009-03-01 2.62
2009-04-01 1.89
2009-05-01 1.20
2009-06-01 1.08
2009-07-01 0.60
2009-08-01 0.46
2009-09-01 0.49
2009-10-01 0.49
2009-11-01 0.48
2009-12-01 0.48
2010-01-01 0.46
2010-02-01 0.49
2010-03-01 0.50
2010-06-01 1.44
2010-07-01 1.85
2010-08-01 2.47
2010-09-01 2.99
2010-10-01 3.21
2010-11-01 3.26
2010-12-01 3.40
2011-01-01 3.60
2011-02-01 3.88
2011-03-01 4.26
2011-04-01 5.01
2011-05-01 5.37
2011-06-01 5.55
2011-07-01 5.56
2011-08-01 5.35
2011-09-01 5.28
2011-10-01 5.14
2011-11-01 5.11
2012-01-01 4.84
2012-02-01 4.98
2012-03-01 5.07
2012-04-01 5.05
2012-05-01 5.16
2012-09-01 4.96
2013-01-01 5.08
2013-04-01 5.03
2013-05-01 4.98
2013-06-01 4.91
2013-07-01 4.88
2013-09-01 4.75
2014-01-01 4.45
2014-02-01 4.19
2014-03-01 4.04
2014-04-01 3.72
2014-06-01 3.95
2014-07-01 3.77
2015-01-01 2.81
2015-02-01 3.08
2015-03-01 1.53
2015-04-01 3.03
2015-06-01 2.85
2016-01-01 3.50
2016-02-01 3.62
2016-03-01 3.60
2016-04-01 3.50
2016-05-01 3.54
2016-06-01 3.52
2016-07-01 3.50
2016-08-01 3.48
2016-09-01 3.50
2016-10-01 3.48
2017-01-01 3.22
2017-04-01 2.72
2017-05-01 2.54
2017-06-01 2.49
2017-07-01 2.45
2017-08-01 2.47
2017-09-01 2.49
2017-10-01 2.50
2017-11-01 2.49
2018-01-01 2.50
2018-02-01 2.52
2018-03-01 2.62
2018-04-01 2.62
2018-05-01 2.59
2018-06-01 2.63
2018-07-01 2.63
2018-08-01 2.63
2018-09-01 2.63