Frequencies for first 10,000 rows of PCT012B092 variable in sf12000860us17 dataset :

   89 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,611       86.11       86.11
          1 |        730        7.30       93.41
          2 |        282        2.82       96.23
          3 |        136        1.36       97.59
          4 |         70        0.70       98.29
          5 |         48        0.48       98.77
          6 |         37        0.37       99.14
          7 |         16        0.16       99.30
          8 |         24        0.24       99.54
          9 |          9        0.09       99.63
         10 |          6        0.06       99.69
         11 |          7        0.07       99.76
         12 |          7        0.07       99.83
         13 |          3        0.03       99.86
         14 |          3        0.03       99.89
         15 |          1        0.01       99.90
         16 |          4        0.04       99.94
         17 |          1        0.01       99.95
         18 |          2        0.02       99.97
         20 |          1        0.01       99.98
         23 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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