Frequencies for first 10,000 rows of pct012n053 variable in sf12000860us29 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,455       94.55       94.55
          1 |        385        3.85       98.40
          2 |         84        0.84       99.24
          3 |         31        0.31       99.55
          4 |         13        0.13       99.68
          5 |          8        0.08       99.76
          6 |          2        0.02       99.78
          7 |          4        0.04       99.82
          8 |          4        0.04       99.86
          9 |          4        0.04       99.90
         10 |          4        0.04       99.94
         11 |          1        0.01       99.95
         12 |          1        0.01       99.96
         22 |          2        0.02       99.98
         24 |          1        0.01       99.99
         31 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017