Month	Percent
1987-01-01	4.500000000
1987-02-01	4.700000000
1987-03-01	4.000000000
1987-04-01	4.400000000
1987-05-01	3.700000000
1987-06-01	3.800000000
1987-07-01	4.100000000
1987-08-01	3.600000000
1987-09-01	4.100000000
1987-10-01	3.900000000
1987-11-01	3.200000000
1987-12-01	2.600000000
1988-01-01	3.600000000
1988-02-01	3.300000000
1988-03-01	3.500000000
1988-04-01	3.800000000
1988-05-01	3.400000000
1988-06-01	3.700000000
1988-07-01	4.000000000
1988-08-01	3.500000000
1988-09-01	4.000000000
1988-10-01	3.500000000
1988-11-01	3.300000000
1988-12-01	2.900000000
1989-01-01	3.500000000
1989-02-01	3.000000000
1989-03-01	2.900000000
1989-04-01	3.000000000
1989-05-01	3.000000000
1989-06-01	2.800000000
1989-07-01	3.100000000
1989-08-01	3.100000000
1989-09-01	3.300000000
1989-10-01	2.700000000
1989-11-01	2.400000000
1989-12-01	2.300000000
1990-01-01	2.600000000
1990-02-01	2.400000000
1990-03-01	2.400000000
1990-04-01	2.700000000
1990-05-01	2.700000000
1990-06-01	3.000000000
1990-07-01	3.600000000
1990-08-01	3.000000000
1990-09-01	2.800000000
1990-10-01	3.300000000
1990-11-01	2.300000000
1990-12-01	2.100000000
1991-01-01	2.800000000
1991-02-01	2.500000000
1991-03-01	2.900000000
1991-04-01	2.600000000
1991-05-01	2.300000000
1991-06-01	2.100000000
1991-07-01	2.700000000
1991-08-01	3.200000000
1991-09-01	3.100000000
1991-10-01	3.200000000
1991-11-01	2.700000000
1991-12-01	2.200000000
1992-01-01	2.900000000
1992-02-01	3.200000000
1992-03-01	2.700000000
1992-04-01	2.700000000
1992-05-01	2.900000000
1992-06-01	2.700000000
1992-07-01	3.100000000
1992-08-01	2.500000000
1992-09-01	2.800000000
1992-10-01	2.800000000
1992-11-01	2.900000000
1992-12-01	2.200000000
1993-01-01	3.200000000
1993-02-01	3.500000000
1993-03-01	3.600000000
1993-04-01	3.000000000
1993-05-01	3.300000000
1993-06-01	3.200000000
1993-07-01	3.600000000
1993-08-01	3.900000000
1993-09-01	4.000000000
1993-10-01	3.700000000
1993-11-01	3.200000000
1993-12-01	2.900000000
1994-01-01	3.800000000
1994-02-01	3.700000000
1994-03-01	3.600000000
1994-04-01	3.800000000
1994-05-01	3.200000000
1994-06-01	3.300000000
1994-07-01	3.900000000
1994-08-01	3.600000000
1994-09-01	3.800000000
1994-10-01	3.900000000
1994-11-01	3.900000000
1994-12-01	3.200000000
1995-01-01	4.500000000
1995-02-01	5.300000000
1995-03-01	5.700000000
1995-04-01	6.300000000
1995-05-01	6.600000000
1995-06-01	6.600000000
1995-07-01	7.300000000
1995-08-01	7.600000000
1995-09-01	7.300000000
1995-10-01	6.700000000
1995-11-01	5.800000000
1995-12-01	5.500000000
1996-01-01	6.400000000
1996-02-01	6.300000000
1996-03-01	6.000000000
1996-04-01	5.900000000
1996-05-01	5.400000000
1996-06-01	5.600000000
1996-07-01	5.800000000
1996-08-01	5.300000000
1996-09-01	5.500000000
1996-10-01	5.200000000
1996-11-01	4.800000000
1996-12-01	4.100000000
1997-01-01	4.500000000
1997-02-01	4.220000000
1997-03-01	4.190000000
1997-04-01	4.290000000
1997-05-01	3.900000000
1997-06-01	3.400000000
1997-07-01	4.090000000
1997-08-01	3.500000000
1997-09-01	3.410000000
1997-10-01	3.230000000
1997-11-01	3.270000000
1997-12-01	2.820000000
1998-01-01	3.590000000
1998-02-01	3.530000000
1998-03-01	3.390000000
1998-04-01	3.050000000
1998-05-01	3.200000000
1998-06-01	3.360000000
1998-07-01	3.200000000
1998-08-01	3.020000000
1998-09-01	3.280000000
1998-10-01	3.110000000
1998-11-01	2.590000000
1998-12-01	2.600000000
1999-01-01	2.850000000
1999-02-01	3.200000000
1999-03-01	2.710000000
1999-04-01	2.700000000
1999-05-01	2.440000000
1999-06-01	2.580000000
1999-07-01	2.260000000
1999-08-01	2.490000000
1999-09-01	2.240000000
1999-10-01	2.500000000
1999-11-01	2.090000000
1999-12-01	2.000000000
2000-01-01	2.280000000
2000-02-01	2.430000000
2000-03-01	2.150000000
2000-04-01	2.710000000
2000-05-01	2.500000000
2000-06-01	2.460000000
2000-07-01	2.580000000
2000-08-01	3.050000000
2000-09-01	2.930000000
2000-10-01	2.600000000
2000-11-01	2.210000000
2000-12-01	2.170000000
2001-01-01	2.710000000
2001-02-01	3.230000000
2001-03-01	2.700000000
2001-04-01	2.630000000
2001-05-01	2.540000000
2001-06-01	2.480000000
2001-07-01	2.970000000
2001-08-01	2.580000000
2001-09-01	2.800000000
2001-10-01	2.990000000
2001-11-01	2.810000000
2001-12-01	2.640000000
2002-01-01	3.580000000
2002-02-01	3.060000000
2002-03-01	3.050000000
2002-04-01	2.970000000
2002-05-01	2.840000000
2002-06-01	2.770000000
2002-07-01	3.080000000
2002-08-01	3.110000000
2002-09-01	3.200000000
2002-10-01	2.930000000
2002-11-01	2.810000000
2002-12-01	2.340000000
2003-01-01	3.080000000
2003-02-01	3.010000000
2003-03-01	3.140000000
2003-04-01	3.010000000
2003-05-01	2.870000000
2003-06-01	3.000000000
2003-07-01	3.830000000
2003-08-01	4.090000000
2003-09-01	4.190000000
2003-10-01	3.940000000
2003-11-01	3.770000000
2003-12-01	2.940000000
2004-01-01	4.010000000
2004-02-01	4.120000000
2004-03-01	3.940000000
2004-04-01	3.880000000
2004-05-01	3.450000000
2004-06-01	3.650000000
2004-07-01	4.110000000
2004-08-01	4.440000000
2004-09-01	4.180000000
2004-10-01	4.080000000
2004-11-01	3.610000000
2004-12-01	3.520000000
2005-01-01	4.203739455
2005-02-01	3.807071446
2005-03-01	3.597244182
2005-04-01	3.708469661
2005-05-01	3.294437686
2005-06-01	3.652321458
2005-07-01	4.115488933
2005-08-01	3.679367397
2005-09-01	3.686337423
2005-10-01	3.568802862
2005-11-01	3.009804625
2005-12-01	2.831601330
2006-01-01	3.529333200
2006-02-01	3.717100709
2006-03-01	3.434179690
2006-04-01	3.306726272
2006-05-01	2.881874815
2006-06-01	3.332808867
2006-07-01	3.977268951
2006-08-01	4.034359445
2006-09-01	3.983755458
2006-10-01	3.889781406
2006-11-01	3.577710435
2006-12-01	3.473309264
2007-01-01	3.955721340
2007-02-01	4.023001989
2007-03-01	4.005017158
2007-04-01	3.595585405
2007-05-01	3.229363571
2007-06-01	3.264771679
2007-07-01	3.953214981
2007-08-01	3.924214579
2007-09-01	3.873865400
2007-10-01	3.930114864
2007-11-01	3.461083892
2007-12-01	3.398419297
2008-01-01	4.037175226
2008-02-01	3.907421938
2008-03-01	3.798105179
2008-04-01	3.610320366
2008-05-01	3.242180966
2008-06-01	3.547843947
2008-07-01	4.147971251
2008-08-01	4.150117976
2008-09-01	4.250612318
2008-10-01	4.110430635
2008-11-01	4.466846208
2008-12-01	4.319827693
2009-01-01	4.997699221
2009-02-01	5.296867726
2009-03-01	4.759472593
2009-04-01	5.250980574
2009-05-01	5.312425677
2009-06-01	5.167582896
2009-07-01	6.118147134
2009-08-01	6.282234658
2009-09-01	6.409583463
2009-10-01	5.944030999
2009-11-01	5.256487323
2009-12-01	4.797360543