Month	Percent
1991-07-01	0.020000000
1991-08-01	0.030000000
1991-09-01	0.060000000
1991-10-01	0.070000000
1991-11-01	0.090000000
1991-12-01	0.080000000
1992-01-01	0.090000000
1992-02-01	0.130000000
1992-03-01	0.160000000
1992-04-01	0.210000000
1992-05-01	0.240000000
1992-06-01	0.270000000
1992-07-01	0.330000000
1992-08-01	0.390000000
1992-09-01	0.490000000
1992-10-01	0.600000000
1992-11-01	0.700000000
1992-12-01	0.800000000
1993-01-01	0.800000000
1993-02-01	0.900000000
1993-03-01	1.000000000
1993-04-01	1.000000000
1993-05-01	1.000000000
1993-06-01	1.000000000
1993-07-01	1.000000000
1993-08-01	1.000000000
1993-09-01	1.000000000
1993-10-01	1.000000000
1993-11-01	1.100000000
1993-12-01	1.100000000
1994-01-01	1.200000000
1994-02-01	1.300000000
1994-03-01	1.500000000
1994-04-01	1.600000000
1994-05-01	1.600000000
1994-06-01	1.700000000
1994-07-01	1.800000000
1994-08-01	1.900000000
1994-09-01	1.900000000
1994-10-01	2.000000000
1994-11-01	2.100000000
1994-12-01	2.200000000
1995-01-01	2.400000000
1995-02-01	2.500000000
1995-03-01	2.700000000
1995-04-01	2.700000000
1995-05-01	2.800000000
1995-06-01	2.800000000
1995-07-01	2.800000000
1995-08-01	2.900000000
1995-09-01	2.900000000
1995-10-01	3.000000000
1995-11-01	3.100000000
1995-12-01	3.200000000
1996-01-01	3.300000000
1996-02-01	3.500000000
1996-03-01	3.700000000
1996-04-01	3.800000000
1996-05-01	3.700000000
1996-06-01	3.600000000
1996-07-01	3.500000000
1996-08-01	3.500000000
1996-09-01	3.400000000
1996-10-01	3.400000000
1996-11-01	3.400000000
1996-12-01	3.400000000
1997-01-01	3.500000000
1997-02-01	3.500000000
1997-03-01	3.500000000
1997-04-01	3.500000000
1997-05-01	3.300000000
1997-06-01	3.200000000
1997-07-01	3.100000000
1997-08-01	3.000000000
1997-09-01	2.800000000
1997-10-01	2.800000000
1997-11-01	2.800000000
1997-12-01	2.800000000
1998-01-01	2.700000000
1998-02-01	2.700000000
1998-03-01	2.700000000
1998-04-01	2.700000000
1998-05-01	2.600000000
1998-06-01	2.500000000
1998-07-01	2.500000000
1998-08-01	2.400000000
1998-09-01	2.400000000
1998-10-01	2.500000000
1998-11-01	2.600000000
1998-12-01	2.600000000
1999-01-01	2.600000000
1999-02-01	2.700000000
1999-03-01	2.600000000
1999-04-01	2.500000000
1999-05-01	2.400000000
1999-06-01	2.200000000
1999-07-01	2.000000000
1999-08-01	1.900000000
1999-09-01	1.800000000
1999-10-01	1.800000000
1999-11-01	1.700000000
1999-12-01	1.700000000
2000-01-01	1.700000000
2000-02-01	1.700000000
2000-03-01	1.700000000
2000-04-01	1.600000000
2000-05-01	1.500000000
2000-06-01	1.400000000
2000-07-01	1.400000000
2000-08-01	1.400000000
2000-09-01	1.300000000
2000-10-01	1.300000000
2000-11-01	1.400000000
2000-12-01	1.400000000
2001-01-01	1.500000000
2001-02-01	1.500000000
2001-03-01	1.500000000
2001-04-01	1.500000000
2001-05-01	1.400000000
2001-06-01	1.400000000
2001-07-01	1.400000000
2001-08-01	1.400000000
2001-09-01	1.400000000
2001-10-01	1.400000000
2001-11-01	1.500000000
2001-12-01	1.600000000
2002-01-01	1.700000000
2002-02-01	1.900000000
2002-03-01	1.900000000
2002-04-01	1.900000000
2002-05-01	1.900000000
2002-06-01	1.800000000
2002-07-01	1.800000000
2002-08-01	1.800000000
2002-09-01	1.800000000
2002-10-01	1.900000000
2002-11-01	2.000000000
2002-12-01	2.100000000
2003-01-01	2.200000000
2003-02-01	2.300000000
2003-03-01	2.300000000
2003-04-01	2.300000000
2003-05-01	2.200000000
2003-06-01	2.100000000
2003-07-01	2.100000000
2003-08-01	2.100000000
2003-09-01	2.100000000
2003-10-01	2.100000000
2003-11-01	2.100000000
2003-12-01	2.200000000
2004-01-01	2.300000000
2004-02-01	2.300000000
2004-03-01	2.300000000
2004-04-01	2.200000000
2004-05-01	2.200000000
2004-06-01	2.100000000
2004-07-01	2.100000000
2004-08-01	2.200000000
2004-09-01	2.200000000
2004-10-01	2.300000000
2004-11-01	2.500000000
2004-12-01	2.600000000
2005-01-01	2.700000000
2005-02-01	2.800000000
2005-03-01	2.700000000
2005-04-01	2.700000000
2005-05-01	2.600000000
2005-06-01	2.500000000
2005-07-01	2.400000000
2005-08-01	2.400000000
2005-09-01	2.300000000
2005-10-01	2.300000000
2005-11-01	2.300000000
2005-12-01	2.500000000
2006-01-01	2.500000000
2006-02-01	2.600000000
2006-03-01	2.600000000
2006-04-01	2.500000000
2006-05-01	2.400000000
2006-06-01	2.300000000
2006-07-01	2.300000000
2006-08-01	2.300000000
2006-09-01	2.200000000
2006-10-01	2.200000000
2006-11-01	2.300000000
2006-12-01	2.300000000
2007-01-01	2.300000000
2007-02-01	2.300000000
2007-03-01	2.300000000
2007-04-01	2.200000000
2007-05-01	2.100000000
2007-06-01	2.000000000
2007-07-01	2.000000000
2007-08-01	2.000000000
2007-09-01	2.000000000
2007-10-01	2.000000000
2007-11-01	2.000000000
2007-12-01	2.000000000
2008-01-01	2.100000000
2008-02-01	2.100000000
2008-03-01	2.000000000
2008-04-01	2.000000000
2008-05-01	1.800000000
2008-06-01	1.800000000
2008-07-01	1.700000000
2008-08-01	1.700000000
2008-09-01	1.600000000
2008-10-01	1.600000000
2008-11-01	1.700000000
2008-12-01	2.000000000
2009-01-01	2.300000000
2009-02-01	2.700000000
2009-03-01	2.900000000
2009-04-01	3.000000000
2009-05-01	2.900000000
2009-06-01	2.800000000
2009-07-01	2.800000000
2009-08-01	2.800000000
2009-09-01	2.700000000
2009-10-01	2.700000000
2009-11-01	2.700000000
2009-12-01	2.800000000
2010-01-01	3.000000000
2010-02-01	3.100000000
2010-03-01	3.000000000
2010-04-01	2.900000000
2010-05-01	2.700000000
2010-06-01	2.400000000
2010-07-01	2.300000000
2010-08-01	2.200000000
2010-09-01	2.100000000
2010-10-01	2.000000000
2010-11-01	2.000000000
2010-12-01	2.100000000
2011-01-01	2.131973138
2011-02-01	2.207918574
2011-03-01	2.177150616
2011-04-01	2.125506342
2011-05-01	2.006578774
2011-06-01	1.887997003
2011-07-01	1.833517461
2011-08-01	1.757601174
2011-09-01	1.672675623
2011-10-01	1.610935675
2011-11-01	1.620209916
2011-12-01	1.703280619
2012-01-01	1.712215495
2012-02-01	1.756027097
2012-03-01	1.732801669
2012-04-01	1.655075663
2012-05-01	1.563229653
2012-06-01	1.486823274
2012-07-01	1.433378397
2012-08-01	1.408833343
2012-09-01	1.347998557
2012-10-01	1.302075552
2012-11-01	1.342324163
2012-12-01	1.405006426
2013-01-01	1.400000000
2013-02-01	1.451581610
2013-03-01	1.400000000
2013-04-01	1.400000000
2013-05-01	1.300000000
2013-06-01	1.300000000
2013-07-01	1.200000000
2013-08-01	1.200000000
2013-09-01	1.200000000
2013-10-01	1.100000000
2013-11-01	1.200000000
2013-12-01	1.212677835
2014-01-01	1.200000000
2014-02-01	1.300000000
2014-03-01	1.200000000
2014-04-01	1.235568058
2014-05-01	1.198284318
2014-06-01	1.150131891
2014-07-01	1.126089018
2014-08-01	1.098999525
2014-09-01	1.051697326
2014-10-01	1.049240968
2014-11-01	1.088136656
2014-12-01	1.171442362
2015-01-01	1.217221283
2015-02-01	1.306546043
2015-03-01	1.315199295
2015-04-01	1.337047513
2015-05-01	1.304162803
2015-06-01	1.273815463
2015-07-01	1.263501653
2015-08-01	1.235125957
2015-09-01	1.194006864
2015-10-01	1.186501889
2015-11-01	1.228603093
2015-12-01	1.304951832
2016-01-01	1.342794360
2016-02-01	1.408749630
2016-03-01	1.394764818
2016-04-01	1.383729144
2016-05-01	1.318299053
2016-06-01	1.259363273
2016-07-01	1.222436085
2016-08-01	1.172631133
2016-09-01	1.117159789
2016-10-01	1.087327169
2016-11-01	1.105345148
2016-12-01	1.163997259
2017-01-01	1.181932300
2017-02-01	1.228643178
2017-03-01	1.200969935
2017-04-01	1.160822505
2017-05-01	1.111771126
2017-06-01	1.074016780
2017-07-01	1.044889243
2017-08-01	1.007939003
2017-09-01	0.954990227
2017-10-01	0.925781907
2017-11-01	0.960435200
2017-12-01	1.016254035
2018-01-01	1.025720419
2018-02-01	1.054307106
2018-03-01	1.030722548
2018-04-01	0.997432284
2018-05-01	0.959342866
2018-06-01	0.927658555
2018-07-01	0.905283185
2018-08-01	0.883976191
2018-09-01	0.847785996