Frequencies for first 10,000 rows of pct012c178 variable in sf12010860us22 dataset :

   71 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,344       93.44       93.44
          1 |        507        5.07       98.51
          2 |        101        1.01       99.52
          3 |         22        0.22       99.74
          4 |          9        0.09       99.83
          5 |          3        0.03       99.86
          6 |          1        0.01       99.87
          7 |          3        0.03       99.90
          8 |          1        0.01       99.91
          9 |          1        0.01       99.92
         10 |          1        0.01       99.93
         11 |          1        0.01       99.94
         14 |          1        0.01       99.95
         15 |          1        0.01       99.96
         18 |          1        0.01       99.97
         25 |          1        0.01       99.98
         39 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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