Frequencies for first 10,000 rows of pct012k044 variable in sf12000860us26 dataset :

   41 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,690       86.90       86.90
          1 |        963        9.63       96.53
          2 |        214        2.14       98.67
          3 |         72        0.72       99.39
          4 |         23        0.23       99.62
          5 |         14        0.14       99.76
          6 |          6        0.06       99.82
          7 |          2        0.02       99.84
          8 |          1        0.01       99.85
         11 |          2        0.02       99.87
         12 |          2        0.02       99.89
         13 |          1        0.01       99.90
         15 |          1        0.01       99.91
         18 |          1        0.01       99.92
         23 |          1        0.01       99.93
         27 |          1        0.01       99.94
         31 |          1        0.01       99.95
         33 |          1        0.01       99.96
         43 |          1        0.01       99.97
         53 |          2        0.02       99.99
         57 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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