2008 12 -6.60 -14.06 -10.33 
2009 01 -5.20 -15.05 -10.12 
2009 02 16.45 -26.96 -21.71 
2009 03 25.59 -35.89 -30.74 
2009 04 16.53 -27.72 -22.12 
2009 05 25.93 -47.41 -36.66 
2009 06 27.40 -46.88 -37.14 
2009 07 28.13 -40.65 -34.39 
2009 08 34.04 -47.88 -40.96 
2009 09 38.90 -48.30 -43.60 
2009 10 24.07 -35.29 -29.68 
2009 11 -7.11 -14.73 -10.92 
2009 12 -5.60 -11.14  -8.37 
2010 01 -7.16 -13.98 -10.57 
2010 02 11.66 -20.82 -16.24 
2010 03 21.15 -31.66 -26.40 
2010 04 24.22 -36.50 -30.36 
2010 05 40.15 -50.10 -45.12 
2010 06 40.16 -51.41 -45.79 
2010 07 39.98 -53.09 -46.53 
2010 08 35.90 -50.04 -42.97 
2010 09 36.12 -47.18 -41.65 
2010 10 24.47 -37.34 -30.91 
2010 11 12.48 -24.82 -18.65 
2010 12 -5.88 -12.98  -9.43 
2011 01 -5.06 -11.39  -8.22 
2011 02 14.23 -24.50 -19.36 
2011 03 19.59 -30.85 -25.22 
2011 04 21.59 -41.21 -31.40 
2011 05 26.19 -43.85 -35.02 
2011 06 24.71 -39.75 -32.23 
2011 07 21.56 -34.27 -27.91 
2011 08 33.90 -43.21 -38.55 
2011 09 30.53 -44.59 -37.56 
2011 10 21.16 -31.96 -26.56 
2011 11 11.47 -26.16 -18.81 
2011 12 -2.89 -10.26  -6.57 
2012 01 -4.06 -12.48  -8.26 
2012 02 -7.51 -18.92 -13.21 
2012 03 19.78 -30.76 -25.27 
2012 04 25.91 -37.43 -31.67 
2012 05 22.93 -34.33 -28.63 
2012 06 36.32 -47.13 -41.72 
2012 07 40.32 -53.29 -46.80 
2012 08 39.22 -49.80 -44.51 
2012 09 26.94 -39.02 -32.98 
2012 10 18.20 -30.87 -24.54 
2012 11 13.51 -21.72 -17.61 
2012 12 -2.64 -10.14  -6.39 
2013 01 -2.74  -9.18  -5.96 
2013 02 11.09 -20.59 -15.84 
2013 03 18.04 -27.23 -22.63 
2013 04 41.18 -50.56 -45.87 
2013 05 25.80 -37.02 -31.41 
2013 06 40.05 -50.15 -45.10 
2013 07 33.50 -45.64 -39.57 
2013 08 38.56 -49.57 -44.06 
2013 09 32.04 -44.33 -38.18 
2013 10 19.24 -31.73 -25.48 
2013 11 13.52 -25.17 -19.34 
2013 12 -6.75 -12.17  -9.46 
2014 01 -4.82 -12.08  -8.45 
