Frequencies for first 10,000 rows of pct013c047 variable in sf12000860us31 dataset :

   75 to 79 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,801       88.01       88.01
          1 |        807        8.07       96.08
          2 |        220        2.20       98.28
          3 |         69        0.69       98.97
          4 |         41        0.41       99.38
          5 |         15        0.15       99.53
          6 |         13        0.13       99.66
          7 |          9        0.09       99.75
          8 |          2        0.02       99.77
          9 |          2        0.02       99.79
         10 |          3        0.03       99.82
         12 |          2        0.02       99.84
         16 |          3        0.03       99.87
         17 |          1        0.01       99.88
         19 |          1        0.01       99.89
         20 |          2        0.02       99.91
         22 |          1        0.01       99.92
         26 |          1        0.01       99.93
         39 |          1        0.01       99.94
         45 |          1        0.01       99.95
         50 |          1        0.01       99.96
         53 |          1        0.01       99.97
         59 |          1        0.01       99.98
         64 |          1        0.01       99.99
        112 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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