Frequencies for first 10,000 rows of pct012l188 variable in sf12010860us31 dataset :

   81 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,474       84.74       84.74
          1 |        835        8.35       93.09
          2 |        272        2.72       95.81
          3 |        109        1.09       96.90
          4 |         97        0.97       97.87
          5 |         48        0.48       98.35
          6 |         35        0.35       98.70
          7 |         27        0.27       98.97
          8 |         20        0.20       99.17
          9 |         12        0.12       99.29
         10 |         11        0.11       99.40
         11 |         12        0.12       99.52
         12 |          3        0.03       99.55
         13 |          8        0.08       99.63
         14 |          3        0.03       99.66
         15 |          3        0.03       99.69
         16 |          9        0.09       99.78
         17 |          5        0.05       99.83
         19 |          3        0.03       99.86
         21 |          2        0.02       99.88
         29 |          1        0.01       99.89
         30 |          2        0.02       99.91
         31 |          1        0.01       99.92
         32 |          1        0.01       99.93
         34 |          1        0.01       99.94
         35 |          1        0.01       99.95
         57 |          2        0.02       99.97
         75 |          1        0.01       99.98
        128 |          1        0.01       99.99
        159 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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