Frequencies for first 10,000 rows of pct012n161 variable in sf12010880us33 dataset :

   54 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,398       93.98       93.98
          1 |        421        4.21       98.19
          2 |         85        0.85       99.04
          3 |         35        0.35       99.39
          4 |         14        0.14       99.53
          5 |         19        0.19       99.72
          6 |          5        0.05       99.77
          7 |          4        0.04       99.81
          8 |          6        0.06       99.87
         10 |          2        0.02       99.89
         11 |          2        0.02       99.91
         13 |          1        0.01       99.92
         15 |          1        0.01       99.93
         22 |          1        0.01       99.94
         23 |          1        0.01       99.95
         24 |          2        0.02       99.97
         25 |          1        0.01       99.98
         34 |          1        0.01       99.99
         35 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017