Frequencies for first 10,000 rows of ager27 variable in mort1975 dataset :

     ager27 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        959        9.59        9.59
          2 |        585        5.85       15.44
          3 |        118        1.18       16.62
          4 |         66        0.66       17.28
          5 |         27        0.27       17.55
          6 |         21        0.21       17.76
          7 |         70        0.70       18.46
          8 |         49        0.49       18.95
          9 |         67        0.67       19.62
         10 |         82        0.82       20.44
         11 |        107        1.07       21.51
         12 |        126        1.26       22.77
         13 |        151        1.51       24.28
         14 |        226        2.26       26.54
         15 |        357        3.57       30.11
         16 |        497        4.97       35.08
         17 |        644        6.44       41.52
         18 |        801        8.01       49.53
         19 |        933        9.33       58.86
         20 |      1,005       10.05       68.91
         21 |      1,100       11.00       79.91
         22 |        978        9.78       89.69
         23 |        668        6.68       96.37
         24 |        261        2.61       98.98
         25 |         81        0.81       99.79
         26 |         17        0.17       99.96
         27 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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