Frequencies for first 10,000 rows of pct013c048 variable in sf12000860us31 dataset :

   80 to 84 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,150       91.50       91.50
          1 |        618        6.18       97.68
          2 |        135        1.35       99.03
          3 |         45        0.45       99.48
          4 |         22        0.22       99.70
          5 |         11        0.11       99.81
          6 |          4        0.04       99.85
          7 |          2        0.02       99.87
          8 |          1        0.01       99.88
          9 |          2        0.02       99.90
         13 |          2        0.02       99.92
         15 |          1        0.01       99.93
         19 |          1        0.01       99.94
         24 |          1        0.01       99.95
         25 |          1        0.01       99.96
         30 |          1        0.01       99.97
         31 |          1        0.01       99.98
         34 |          1        0.01       99.99
         63 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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