b.e15.BHIST.f09_g16.20thC.28_1966_1970   b.e15.BHIST.f09_g16.20thC.28_1851_1855
    0       1.85      1.55
    1       5.77     24.30
    2       1.09      0.68
    3      11.82     23.68
    4       1.10      0.75
    5       9.33     18.28
    6       0.87      0.57
    7      10.69     15.93
    8       1.08      0.60
    9      11.52     22.50
   10       1.26      0.80
   11       9.61     22.41
   12       4.98      5.94