Frequencies for first 10,000 rows of pct012k059 variable in sf12010860us30 dataset :

   56 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,825       88.25       88.25
          1 |        901        9.01       97.26
          2 |        172        1.72       98.98
          3 |         51        0.51       99.49
          4 |         15        0.15       99.64
          5 |          9        0.09       99.73
          6 |          6        0.06       99.79
          7 |          5        0.05       99.84
          8 |          4        0.04       99.88
         11 |          1        0.01       99.89
         12 |          1        0.01       99.90
         20 |          1        0.01       99.91
         23 |          1        0.01       99.92
         26 |          1        0.01       99.93
         30 |          1        0.01       99.94
         32 |          1        0.01       99.95
         42 |          1        0.01       99.96
         43 |          1        0.01       99.97
         48 |          1        0.01       99.98
         54 |          1        0.01       99.99
         69 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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