Frequencies for first 10,000 rows of pct013c024 variable in sf12000860us31 dataset :

   80 to 84 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,490       94.90       94.90
          1 |        392        3.92       98.82
          2 |         70        0.70       99.52
          3 |         24        0.24       99.76
          4 |          5        0.05       99.81
          5 |          6        0.06       99.87
          6 |          2        0.02       99.89
          7 |          4        0.04       99.93
         13 |          2        0.02       99.95
         14 |          1        0.01       99.96
         15 |          1        0.01       99.97
         17 |          1        0.01       99.98
         25 |          1        0.01       99.99
         36 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017