1991-2010 1851-1870 0 4.69 4.78 1 20.00 17.82 2 -0.39 -0.43 3 13.30 23.02 4 3.26 3.43 5 19.61 20.70 6 0.79 1.06 7 17.30 21.19 8 0.74 0.52 9 17.68 15.97 10 -1.35 -1.45 11 10.27 19.14 12 26.57 26.23