Frequencies for first 10,000 rows of pct012o171 variable in sf12010860us34 dataset :

   64 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,152       81.52       81.52
          1 |      1,203       12.03       93.55
          2 |        345        3.45       97.00
          3 |        161        1.61       98.61
          4 |         72        0.72       99.33
          5 |         30        0.30       99.63
          6 |         15        0.15       99.78
          7 |          7        0.07       99.85
          8 |          5        0.05       99.90
          9 |          4        0.04       99.94
         10 |          3        0.03       99.97
         11 |          1        0.01       99.98
         13 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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