Month	Percent
1989-01-01	2.47492720802329
1989-02-01	3.05829882128066
1989-03-01	2.31296402055968
1989-04-01	1.98711063372718
1989-05-01	1.76332288401254
1989-06-01	1.61186331399097
1989-07-01	1.58128593831678
1989-08-01	1.66557377049180
1989-09-01	1.30941469163284
1989-10-01	1.23234916559692
1989-11-01	1.73379567884769
1989-12-01	1.69540646283147
1990-01-01	2.13119709794438
1990-02-01	2.82342396175680
1990-03-01	2.24350205198358
1990-04-01	1.70313114109786
1990-05-01	1.71071109408911
1990-06-01	1.49404912636110
1990-07-01	1.48413510747185
1990-08-01	1.54142581888247
1990-09-01	1.36758691206544
1990-10-01	1.39629347550140
1990-11-01	1.66230366492147
1990-12-01	1.99219838395096
1991-01-01	2.57621296693860
1991-02-01	3.02769407375520
1991-03-01	2.51744424681899
1991-04-01	1.88289914882641
1991-05-01	1.81795227875268
1991-06-01	1.72112746320778
1991-07-01	1.82573659027953
1991-08-01	1.58689856544370
1991-09-01	1.63995993990986
1991-10-01	1.72626387176326
1991-11-01	1.77777777777778
1991-12-01	1.95312500000000
1992-01-01	2.68877124547228
1992-02-01	2.96616070185211
1992-03-01	2.64013525816101
1992-04-01	2.29017239209765
1992-05-01	2.05929785386428
1992-06-01	1.81012190616919
1992-07-01	1.68056765840906
1992-08-01	1.91825476429288
1992-09-01	1.89976252968379
1992-10-01	1.77208958897366
1992-11-01	1.83497848645912
1992-12-01	2.10709971815864
1993-01-01	2.79507402795074
1993-02-01	2.94199665365310
1993-03-01	2.63910556422257
1993-04-01	2.45901639344262
1993-05-01	2.26470230122976
1993-06-01	2.08054507847670
1993-07-01	2.00857317819963
1993-08-01	2.08616220219726
1993-09-01	1.96437286481210
1993-10-01	2.11318921544814
1993-11-01	1.97433366238894
1993-12-01	2.05330952684607
1994-01-01	2.31070496083551
1994-02-01	2.78102664067576
1994-03-01	2.60488415779587
1994-04-01	2.28044638524988
1994-05-01	1.90545103714424
1994-06-01	1.84353580713779
1994-07-01	1.69471297290846
1994-08-01	1.69247389268995
1994-09-01	1.67164179104478
1994-10-01	1.54394299287411
1994-11-01	1.51679306608884
1994-12-01	1.67520940117515
1995-01-01	1.73329959514170
1995-02-01	2.27560050568900
1995-03-01	2.13811747358073
1995-04-01	1.85074626865672
1995-05-01	1.72776091524632
1995-06-01	1.67150319210679
1995-07-01	1.52990264255911
1995-08-01	1.53989734017732
1995-09-01	1.61234195568960
1995-10-01	1.45358818816527
1995-11-01	1.37097711165331
1995-12-01	1.52801358234295
1996-01-01	1.74289245982695
1996-02-01	1.97360305908474
1996-03-01	1.88065099457504
1996-04-01	1.64087047596881
1996-05-01	1.46168779262304
1996-06-01	1.44531694548765
1996-07-01	1.26394898656343
1996-08-01	1.37221269296741
1996-09-01	1.22844584695143
1996-10-01	1.34713872188822
1996-11-01	1.64957646009808
1996-12-01	1.97209087763810
1997-01-01	2.39430039710348
1997-02-01	3.00093414292387
1997-03-01	2.93785310734463
1997-04-01	2.57369115706115
1997-05-01	2.35410051461732
1997-06-01	1.99846272098386
1997-07-01	1.91714411635082
1997-08-01	1.87631841900744
1997-09-01	1.90181335692172
1997-10-01	1.80815876515987
1997-11-01	2.32635427052177
1997-12-01	2.76154463160307
1998-01-01	4.02072027627035
1998-02-01	5.15916575192097
1998-03-01	5.24207798327247
1998-04-01	5.42349411493192
1998-05-01	5.49024084008675
1998-06-01	5.72928555124401
1998-07-01	6.29812665210895
1998-08-01	5.88782871771003
1998-09-01	5.84058634906092
1998-10-01	5.87166382737081
1998-11-01	5.95872942267563
1998-12-01	6.93197921587152
1999-01-01	7.27736605515733
1999-02-01	7.22052535125229
1999-03-01	6.70746057895976
1999-04-01	5.79462659380692
1999-05-01	4.99550965424338
1999-06-01	5.60000000000000
1999-07-01	5.60000000000000
1999-08-01	5.00000000000000
1999-09-01	4.20000000000000
1999-10-01	4.00000000000000
1999-11-01	3.90000000000000
1999-12-01	4.30000000000000
2000-01-01	4.80000000000000
2000-02-01	4.80000000000000
2000-03-01	4.60000000000000
2000-04-01	3.60000000000000
2000-05-01	3.40000000000000
2000-06-01	3.10000000000000
2000-07-01	3.20000000000000
2000-08-01	3.30000000000000
2000-09-01	3.40000000000000
2000-10-01	3.00000000000000
2000-11-01	3.10000000000000
2000-12-01	3.60000000000000
2001-01-01	4.00000000000000
2001-02-01	4.50000000000000
2001-03-01	4.20000000000000
2001-04-01	3.50000000000000
2001-05-01	3.10000000000000
2001-06-01	3.00000000000000
2001-07-01	3.00000000000000
2001-08-01	3.10000000000000
2001-09-01	2.70000000000000
2001-10-01	2.80000000000000
2001-11-01	2.80000000000000
2001-12-01	3.20000000000000
2002-01-01	3.60000000000000
2002-02-01	3.60000000000000
2002-03-01	3.50000000000000
2002-04-01	2.90000000000000
2002-05-01	2.70000000000000
2002-06-01	2.30000000000000
2002-07-01	2.60000000000000
2002-08-01	2.60000000000000
2002-09-01	2.20000000000000
2002-10-01	2.20000000000000
2002-11-01	2.20000000000000
2002-12-01	2.50000000000000
2003-01-01	3.60000000000000
2003-02-01	3.60000000000000
2003-03-01	3.50000000000000
2003-04-01	3.20000000000000
2003-05-01	3.10000000000000
2003-06-01	3.10000000000000
2003-07-01	3.30000000000000
2003-08-01	3.20000000000000
2003-09-01	3.00000000000000
2003-10-01	3.00000000000000
2003-11-01	3.40000000000000
2003-12-01	3.50000000000000
2004-01-01	3.70000000000000
2004-02-01	4.10000000000000
2004-03-01	4.10000000000000
2004-04-01	3.60000000000000
2004-05-01	3.30000000000000
2004-06-01	3.10000000000000
2004-07-01	3.20000000000000
2004-08-01	3.30000000000000
2004-09-01	2.90000000000000
2004-10-01	2.90000000000000
2004-11-01	2.80000000000000
2004-12-01	3.30000000000000
2005-01-01	3.90000000000000
2005-02-01	4.00000000000000
2005-03-01	3.80000000000000
2005-04-01	3.60000000000000
2005-05-01	3.30000000000000
2005-06-01	3.40000000000000
2005-07-01	3.20000000000000
2005-08-01	3.00000000000000
2005-09-01	3.30000000000000
2005-10-01	3.40000000000000
2005-11-01	2.90000000000000
2005-12-01	3.10000000000000
2006-01-01	3.20000000000000
2006-02-01	3.60000000000000
2006-03-01	3.50000000000000
2006-04-01	2.90000000000000
2006-05-01	2.70000000000000
2006-06-01	2.80000000000000
2006-07-01	2.90000000000000
2006-08-01	3.00000000000000
2006-09-01	2.70000000000000
2006-10-01	2.70000000000000
2006-11-01	2.60000000000000
2006-12-01	2.80000000000000
2007-01-01	2.90000000000000
2007-02-01	3.00000000000000
2007-03-01	2.80000000000000
2007-04-01	2.70000000000000
2007-05-01	2.50000000000000
2007-06-01	2.60000000000000
2007-07-01	2.70000000000000
2007-08-01	2.50000000000000
2007-09-01	2.40000000000000
2007-10-01	2.50000000000000
2007-11-01	2.50000000000000
2007-12-01	2.60000000000000
2008-01-01	2.80000000000000
2008-02-01	2.90000000000000
2008-03-01	2.80000000000000
2008-04-01	2.60000000000000
2008-05-01	2.60000000000000
2008-06-01	2.80000000000000
2008-07-01	2.60000000000000
2008-08-01	2.50000000000000
2008-09-01	2.40000000000000
2008-10-01	2.50000000000000
2008-11-01	2.40000000000000
2008-12-01	2.60000000000000
2009-01-01	2.90000000000000
2009-02-01	3.30000000000000
2009-03-01	3.10000000000000
2009-04-01	3.20000000000000
2009-05-01	3.20000000000000
2009-06-01	3.30000000000000
2009-07-01	3.00000000000000
2009-08-01	2.90000000000000
2009-09-01	2.60000000000000
2009-10-01	2.70000000000000
2009-11-01	2.80000000000000
2009-12-01	3.10000000000000
2010-01-01	5.00000000000000
2010-02-01	4.60000000000000
2010-03-01	3.70000000000000
2010-04-01	3.10000000000000
2010-05-01	2.60000000000000
2010-06-01	2.90000000000000
2010-07-01	3.20000000000000
2010-08-01	3.00000000000000
2010-09-01	3.30000000000000
2010-10-01	3.00000000000000
2010-11-01	2.50000000000000
2010-12-01	3.20000000000000
2011-01-01	3.60000000000000
2011-02-01	4.50000000000000
2011-03-01	4.10000000000000
2011-04-01	3.30000000000000
2011-05-01	2.90000000000000
2011-06-01	3.10000000000000
2011-07-01	2.90000000000000
2011-08-01	2.60000000000000
2011-09-01	2.70000000000000
2011-10-01	2.50000000000000
2011-11-01	2.50000000000000
2011-12-01	2.80000000000000
2012-01-01	3.30000000000000
2012-02-01	4.30000000000000
2012-03-01	3.50000000000000
2012-04-01	3.20000000000000
2012-05-01	2.90000000000000
2012-06-01	2.90000000000000
2012-07-01	2.70000000000000
2012-08-01	2.70000000000000
2012-09-01	2.60000000000000
2012-10-01	2.60000000000000
2012-11-01	2.40000000000000
2012-12-01	2.40000000000000
2013-01-01	3.10000000000000
2013-02-01	3.60000000000000
2013-03-01	3.30000000000000
2013-04-01	3.00000000000000
2013-05-01	2.90000000000000
2013-06-01	2.80000000000000
2013-07-01	2.70000000000000
2013-08-01	2.60000000000000
2013-09-01	2.40000000000000
2013-10-01	2.40000000000000
2013-11-01	2.40000000000000
2013-12-01	2.80000000000000
2014-01-01	3.40000000000000
2014-02-01	4.80000000000000
2014-03-01	3.80000000000000
2014-04-01	3.80000000000000
2014-05-01	3.70000000000000
2014-06-01	3.60000000000000
2014-07-01	3.40000000000000
2014-08-01	3.10000000000000
2014-09-01	2.90000000000000
2014-10-01	3.00000000000000
2014-11-01	2.90000000000000
2014-12-01	3.30000000000000
2015-01-01	3.70000000000000
2015-02-01	4.80000000000000
2015-03-01	4.10000000000000
2015-04-01	4.00000000000000
2015-05-01	3.80000000000000
2015-06-01	3.70000000000000
2015-07-01	3.40000000000000
2015-08-01	3.20000000000000
2015-09-01	2.90000000000000
2015-10-01	3.00000000000000
2015-11-01	2.80000000000000
2015-12-01	3.10000000000000
2016-01-01	3.60000000000000
2016-02-01	5.00000000000000
2016-03-01	4.00000000000000
2016-04-01	3.90000000000000
2016-05-01	3.50000000000000
2016-06-01	3.40000000000000
2016-07-01	3.20000000000000
2016-08-01	3.30000000000000
2016-09-01	3.40000000000000
2016-10-01	3.30000000000000
2016-11-01	3.10000000000000
2016-12-01	3.30000000000000
2017-01-01	3.80000000000000
2017-02-01	5.20000000000000
2017-03-01	4.20000000000000
2017-04-01	4.00000000000000
2017-05-01	3.40000000000000
2017-06-01	3.60000000000000
2017-07-01	3.20000000000000
2017-08-01	3.30000000000000
2017-09-01	2.90000000000000
2017-10-01	2.90000000000000
2017-11-01	2.90000000000000
2017-12-01	3.00000000000000
2018-01-01	3.80000000000000
2018-02-01	5.00000000000000
2018-03-01	4.40000000000000
2018-04-01	4.00000000000000
2018-05-01	3.70000000000000
2018-06-01	3.60000000000000
2018-07-01	3.60000000000000
2018-08-01	3.80000000000000
2018-09-01	3.50000000000000