1991-2010   1851-1870
    0       1.23      1.25
    1       5.17      4.31
    2      -0.11     -0.50
    3       8.00      6.26
    4      -0.18     -0.44
    5       7.10      5.50
    6      -0.00     -0.41
    7       8.51      8.03
    8      -0.20     -0.72
    9      11.90     10.12
   10      -0.08     -0.43
   11       8.45      6.45
   12      50.39     51.02