Frequencies for first 10,000 rows of eanum variable in mort1975 dataset :

      eanum |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        950        9.50        9.50
          2 |      2,213       22.13       31.63
          3 |      2,737       27.37       59.00
          4 |      2,024       20.24       79.24
          5 |      1,146       11.46       90.70
          6 |        551        5.51       96.21
          7 |        215        2.15       98.36
          8 |         96        0.96       99.32
          9 |         27        0.27       99.59
         10 |         34        0.34       99.93
         11 |          5        0.05       99.98
         12 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015