Month Percent 1972-01-01 0.000000 1972-02-01 0.000000 1972-03-01 0.036765 1972-04-01 0.334821 1972-05-01 0.825000 1972-06-01 1.437500 1972-07-01 0.836207 1972-08-01 0.049242 1972-09-01 0.396552 1972-10-01 1.508330 1972-11-01 2.324220 1972-12-01 3.266130 1973-01-01 3.892240 1973-02-01 3.375000 1973-03-01 1.257810 1973-04-01 1.541670 1973-05-01 0.449219 1973-06-01 1.064660 1973-07-01 1.991940 1973-08-01 1.718750 1973-09-01 3.035710 1973-10-01 2.548390 1973-11-01 6.632810 1973-12-01 3.782260 1974-01-01 8.048390 1974-02-01 4.973210 1974-03-01 5.508620 1974-04-01 6.661290 1974-05-01 4.636360 1974-06-01 9.750000 1974-07-01 7.830880 1974-08-01 6.870690 1974-09-01 4.517240 1974-10-01 2.424390 1974-11-01 4.163790 1974-12-01 4.852940 1975-01-01 2.693970 1975-02-01 1.071430 1975-03-01 1.163790 1975-04-01 2.954550 1975-05-01 2.913790 1975-06-01 0.577586 1975-07-01 3.294120 1975-08-01 0.977679 1975-09-01 1.587500 1975-10-01 0.890152 1975-11-01 0.812500 1975-12-01 1.035710 1976-01-01 0.508929 1976-02-01 0.785714 1976-03-01 0.979839 1976-04-01 0.457031 1976-05-01 0.629310 1976-06-01 0.366667 1976-07-01 1.128910 1976-08-01 0.745833 1976-09-01 0.636719 1976-10-01 1.581900 1976-11-01 0.941667 1976-12-01 0.363636 1977-01-01 0.750000 1977-02-01 2.290180 1977-03-01 1.825760 1977-04-01 2.987070 1977-05-01 3.020830 1977-06-01 2.355470 1977-07-01 1.779170 1977-08-01 0.925000 1977-09-01 1.480470 1977-10-01 0.969828 1977-11-01 1.577080 1977-12-01 0.583333 1978-01-01 0.008621 1978-02-01 0.000000 1978-03-01 0.431818 1978-04-01 0.025862 1978-05-01 0.781250 1978-06-01 0.869141 1978-07-01 1.779170 1978-08-01 0.412109 1978-09-01 0.224138 1978-10-01 -0.262500 1978-11-01 -0.093750 1978-12-01 -0.155242 1979-01-01 -0.203664 1979-02-01 -0.287946 1979-03-01 0.001953 1979-04-01 0.879167 1979-05-01 1.020830 1979-06-01 0.906250 1979-07-01 0.733871 1979-08-01 0.751953 1979-09-01 1.205360 1979-10-01 1.240930 1979-11-01 1.433590 1979-12-01 7.387100 1980-01-01 2.231850 1980-02-01 0.969828 1980-03-01 3.329740 1980-04-01 4.668560 1980-05-01 3.295260 1980-06-01 3.441810 1980-07-01 4.042280 1980-08-01 6.160710 1980-09-01 1.406250 1980-10-01 1.634470 1980-11-01 3.917410 1980-12-01 0.987500 1981-01-01 3.738840 1981-02-01 4.524550 1981-03-01 5.049580 1981-04-01 8.295450 1981-05-01 5.145090 1981-06-01 6.875000 1981-07-01 4.217800 1981-08-01 5.081900 1981-09-01 9.579170 1981-10-01 8.498050 1981-11-01 8.217670 1981-12-01 5.851100 1982-01-01 6.598210 1982-02-01 5.020090 1982-03-01 3.542340 1982-04-01 3.195310 1982-05-01 2.017240 1982-06-01 2.625000 1982-07-01 2.029300 1982-08-01 2.147920 1982-09-01 2.623050 1982-10-01 2.280170 1982-11-01 2.062500 1982-12-01 1.043560 1983-01-01 1.564660 1983-02-01 3.089290 1983-03-01 4.101790 1983-04-01 4.377310 1983-05-01 5.137500 1983-06-01 4.343750 1983-07-01 4.100000 1983-08-01 2.906250 1983-09-01 3.005860 1983-10-01 2.267240 1983-11-01 2.264770 1983-12-01 2.460230 1984-01-01 2.148710 1984-02-01 3.036640 1984-03-01 3.056640 1984-04-01 2.316670 1984-05-01 2.750000 1984-06-01 3.838360 1984-07-01 4.854840 1984-08-01 2.888670 1984-09-01 3.977680 1984-10-01 3.431450 1984-11-01 2.923830 1984-12-01 4.850810 1985-01-01 4.743950 1985-02-01 3.238840 1985-03-01 4.491380 1985-04-01 4.372980 1985-05-01 4.759770 1985-06-01 4.573660 1985-07-01 3.198530 1985-08-01 3.549570 1985-09-01 3.775860 1985-10-01 1.958330 1985-11-01 1.989220 1985-12-01 4.365810 1986-01-01 3.704740 1986-02-01 3.127230 1986-03-01 4.797410 1986-04-01 3.503790 1986-05-01 3.900860 1986-06-01 5.467670 1986-07-01 3.064340 1986-08-01 2.600450 1986-09-01 2.368750 1986-10-01 1.189390 1986-11-01 1.689730 1986-12-01 2.632140 1987-01-01 2.470980 1987-02-01 2.991070 1987-03-01 2.087500 1987-04-01 2.321970 1987-05-01 2.819200 1987-06-01 4.447920 1987-07-01 2.702650 1987-08-01 2.700430 1987-09-01 2.408330 1987-10-01 2.195310 1987-11-01 2.681030 1987-12-01 0.290440 1988-01-01 0.383930 1988-02-01 0.562500 1988-03-01 0.985710 1988-04-01 1.715280 1988-05-01 1.856250 1988-06-01 2.537880 1988-07-01 2.713360 1988-08-01 2.223480 1988-09-01 2.405170 1988-10-01 3.135780 1988-11-01 4.122920 1988-12-01 3.984850 1989-01-01 4.801720 1989-02-01 5.234380 1989-03-01 4.992430 1989-04-01 5.737070 1989-05-01 7.087500 1989-06-01 6.937500 1989-07-01 6.855600 1989-08-01 7.053030 1989-09-01 7.140630 1989-10-01 6.987500 1989-11-01 6.628910 1989-12-01 8.566530 1990-01-01 9.280170 1990-02-01 8.571430 1990-03-01 8.751950 1990-04-01 9.110420 1990-05-01 8.520830 1990-06-01 8.703130 1990-07-01 8.582660 1990-08-01 7.769530 1990-09-01 6.618300 1990-10-01 7.391130 1990-11-01 7.726560 1990-12-01 8.909270 1991-01-01 7.963710 1991-02-01 7.674110 1991-03-01 8.731250 1991-04-01 8.068750 1991-05-01 7.589840 1991-06-01 7.470980 1991-07-01 7.235290 1991-08-01 7.943970 1991-09-01 7.801720 1991-10-01 7.532200 1991-11-01 7.146550 1991-12-01 7.625000 1992-01-01 7.142240 1992-02-01 7.236610 1992-03-01 8.470830 1992-04-01 8.348480 1992-05-01 9.066960 1992-06-01 8.950000 1992-07-01 8.034090 1992-08-01 7.530170 1992-09-01 7.050000 1992-10-01 5.746090 1992-11-01 6.129310 1992-12-01 5.926470 1993-01-01 5.165180 1993-02-01 5.714290 1993-03-01 5.330650 1993-04-01 5.210940 1993-05-01 4.939660 1993-06-01 5.087500 1993-07-01 4.695310 1993-08-01 4.875000 1993-09-01 4.767580 1993-10-01 4.502160 1993-11-01 4.581250 1993-12-01 4.401520 1994-01-01 4.068970 1994-02-01 4.229910 1994-03-01 4.100000 1994-04-01 3.967590 1994-05-01 4.127080 1994-06-01 3.976560 1994-07-01 3.968750 1994-08-01 3.854170 1994-09-01 3.527340 1994-10-01 3.471980 1994-11-01 3.341670 1994-12-01 3.564390 1995-01-01 3.480600 1995-02-01 3.258930 1995-03-01 3.534090 1995-04-01 3.413790 1995-05-01 3.125000 1995-06-01 3.037110 1995-07-01 2.412500 1995-08-01 3.080080 1995-09-01 2.836210 1995-10-01 1.954170 1995-11-01 2.179690 1995-12-01 2.346770 1996-01-01 1.568970 1996-02-01 1.241940 1996-03-01 1.797410 1996-04-01 1.622920 1996-05-01 2.232950 1996-06-01 2.415180 1996-07-01 2.170960 1996-08-01 2.068970 1996-09-01 1.426720 1996-10-01 1.422350 1996-11-01 1.646550 1996-12-01 1.786760 1997-01-01 1.461210 1997-02-01 1.544640 1997-03-01 2.049570 1997-04-01 1.379170 1997-05-01 1.261720 1997-06-01 1.051720 1997-07-01 1.468750 1997-08-01 1.031250 1997-09-01 1.112500 1997-10-01 1.503790 1997-11-01 1.328130 1997-12-01 1.000000 1998-01-01 0.892860 1998-02-01 0.753350 1998-03-01 0.889580 1998-04-01 1.126950 1998-05-01 1.545830 1998-06-01 1.866380 1998-07-01 1.776520 1998-08-01 1.493530 1998-09-01 1.233330 1998-10-01 0.880860 1998-11-01 1.161640 1998-12-01 1.036760 1999-01-01 0.843750 1999-02-01 1.080360 1999-03-01 1.007140 1999-04-01 0.803570 1999-05-01 0.840520 1999-06-01 0.883330 1999-07-01 0.777340 1999-08-01 0.756250 1999-09-01 0.843750 1999-10-01 0.974140 1999-11-01 0.952080 1999-12-01 1.357010 2000-01-01 1.184270 2000-02-01 1.941810 2000-03-01 1.612420 2000-04-01 2.627930 2000-05-01 2.190610 2000-06-01 2.968620 2000-07-01 3.015330 2000-08-01 2.924690 2000-09-01 3.231720 2000-10-01 3.062670 2000-11-01 3.096880 2000-12-01 3.500000 2001-01-01 3.360000 2001-02-01 3.300000 2001-03-01 3.350000 2001-04-01 3.100000 2001-05-01 3.250000 2001-06-01 3.250000 2001-07-01 3.200000 2001-08-01 3.300000 2001-09-01 2.120000 2001-10-01 2.150000 2001-11-01 2.180000 2001-12-01 1.650000 2002-01-01 1.420000 2002-02-01 1.680000 2002-03-01 1.320000 2002-04-01 1.510000 2002-05-01 1.030000 2002-06-01 1.020000 2002-07-01 0.640000 2002-08-01 0.600000 2002-09-01 0.650000 2002-10-01 0.530000 2002-11-01 0.590000 2002-12-01 0.440000 2003-01-01 0.480000 2003-02-01 0.490000 2003-03-01 0.170000 2003-04-01 0.110000 2003-05-01 0.100000 2003-06-01 0.130000 2003-07-01 0.080000 2003-08-01 0.080000 2003-09-01 0.110000 2003-10-01 0.100000 2003-11-01 0.110000 2003-12-01 0.090000 2004-01-01 0.100000 2004-02-01 0.090000 2004-03-01 0.100000 2004-04-01 0.120000 2004-05-01 0.100000 2004-06-01 0.360000 2004-07-01 0.220000 2004-08-01 0.180000 2004-09-01 0.540000 2004-10-01 0.580000 2004-11-01 0.450000 2004-12-01 0.550000 2005-01-01 0.600000 2005-02-01 0.630000 2005-03-01 0.750000 2005-04-01 0.640000 2005-05-01 0.660000 2005-06-01 0.580000 2005-07-01 0.630000 2005-08-01 0.630000 2005-09-01 0.630000 2005-10-01 0.610000 2005-11-01 0.630000 2005-12-01 0.630000 2006-01-01 0.750000 2006-02-01 0.910000 2006-03-01 1.030000 2006-04-01 1.220000 2006-05-01 1.160000 2006-06-01 1.270000 2006-07-01 1.300000 2006-08-01 1.330000 2006-09-01 1.610000 2006-10-01 1.590000 2006-11-01 1.870000 2006-12-01 1.940000 2007-01-01 2.020000 2007-02-01 1.940000 2007-03-01 1.980000 2007-04-01 2.100000 2007-05-01 2.180000 2007-06-01 2.560000 2007-07-01 2.500000 2007-08-01 2.350000 2007-09-01 2.200000 2007-10-01 2.090000 2007-11-01 2.060000 2007-12-01 2.000000 2008-01-01 2.380000 2008-02-01 2.320000 2008-03-01 2.620000 2008-04-01 1.830000 2008-05-01 1.950000 2008-06-01 1.820000 2008-07-01 1.970000 2008-08-01 1.980000 2008-09-01 1.700000 2008-10-01 0.300000 2008-11-01 0.050000 2008-12-01 0.010000 2009-01-01 0.000000 2009-02-01 0.000000 2009-03-01 0.050000 2009-04-01 0.050000 2009-05-01 0.050000 2009-06-01 0.050000 2009-07-01 0.050000 2009-08-01 0.050000 2009-09-01 0.050000 2009-10-01 0.050000 2009-11-01 0.050000 2009-12-01 0.050000 2010-01-01 0.050000 2010-02-01 0.050000 2010-03-01 0.050000 2010-04-01 0.050000 2010-05-01 0.020000 2010-06-01 0.030000 2010-07-01 0.050000 2010-08-01 0.080000 2010-09-01 0.080000 2010-10-01 0.050000 2010-11-01 0.040000 2010-12-01 0.040000 2011-01-01 0.040000 2011-02-01 0.040000 2011-03-01 0.040000 2011-04-01 0.040000 2011-05-01 0.090000 2011-06-01 0.090000 2011-07-01 0.050000 2011-08-01 -0.290000 2011-09-01 0.020000 2011-10-01 0.050000 2011-11-01 0.050000 2011-12-01 0.070000 2012-01-01 0.010000 2012-02-01 0.030000 2012-03-01 0.050000 2012-04-01 0.020000 2012-05-01 0.000000 2012-06-01 0.000000 2012-07-01 0.000000 2012-08-01 -0.050000 2012-09-01 0.010000 2012-10-01 0.010000 2012-11-01 -0.050000 2012-12-01 -0.200000 2013-01-01 -0.150000 2013-02-01 -0.200000 2013-03-01 -0.100000 2013-04-01 0.060000 2013-05-01 -0.030000 2013-06-01 -0.030000 2013-07-01 0.010000 2013-08-01 -0.200000 2013-09-01 -0.050000 2013-10-01 -0.150000 2013-11-01 -0.080000 2013-12-01 0.010000 2014-01-01 -0.120000 2014-02-01 -0.150000 2014-03-01 -0.150000 2014-04-01 -0.150000 2014-05-01 -0.160000 2014-06-01 -0.150000 2014-07-01 -0.150000 2014-08-01 -0.100000 2014-09-01 -0.100000 2014-10-01 -0.100000 2014-11-01 -0.100000 2014-12-01 -2.000000 2015-01-01 -1.750000 2015-02-01 -1.000000 2015-03-01 -1.500000 2015-04-01 -1.000000 2015-05-01 -1.250000 2015-06-01 -1.150000 2015-07-01 -1.000000 2015-08-01 -1.250000 2015-09-01 -1.000000 2015-10-01 -0.900000 2015-11-01 -1.100000 2015-12-01 -1.000000 2016-01-01 -1.000000 2016-02-01 -0.850000 2016-03-01 -1.100000 2016-04-01 -1.000000 2016-05-01 -1.250000 2016-06-01 -1.750000 2016-07-01 -1.000000 2016-08-01 -3.650000 2016-09-01 -0.950000 2016-10-01 -0.850000 2016-11-01 -0.900000 2016-12-01 -0.900000 2017-01-01 -0.900000 2017-02-01 -0.950000 2017-03-01 -0.950000 2017-04-01 -0.900000 2017-05-01 -0.950000 2017-06-01 -1.180000 2017-07-01 -0.900000 2017-08-01 -1.150000 2017-09-01 -0.900000 2017-10-01 -0.970000 2017-11-01 -1.000000 2017-12-01 -1.000000 2018-01-01 -1.000000 2018-02-01 -0.950000 2018-03-01 -1.000000 2018-04-01 -0.980000 2018-05-01 -0.950000 2018-06-01 -0.900000 2018-07-01 -0.950000 2018-08-01 -0.900000 2018-09-01 -0.900000