Frequencies for first 10,000 rows of pct012c141 variable in sf12010860us22 dataset :

   34 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,476       84.76       84.76
          1 |        952        9.52       94.28
          2 |        301        3.01       97.29
          3 |        109        1.09       98.38
          4 |         72        0.72       99.10
          5 |         29        0.29       99.39
          6 |         14        0.14       99.53
          7 |         10        0.10       99.63
          8 |         12        0.12       99.75
          9 |          6        0.06       99.81
         10 |          4        0.04       99.85
         11 |          1        0.01       99.86
         12 |          2        0.02       99.88
         13 |          1        0.01       99.89
         14 |          1        0.01       99.90
         23 |          2        0.02       99.92
         28 |          1        0.01       99.93
         37 |          2        0.02       99.95
         38 |          1        0.01       99.96
         39 |          1        0.01       99.97
         60 |          1        0.01       99.98
         63 |          1        0.01       99.99
         77 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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