Frequencies for first 10,000 rows of pct012c137 variable in sf12010860us22 dataset :

   30 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,411       84.11       84.11
          1 |        953        9.53       93.64
          2 |        319        3.19       96.83
          3 |        134        1.34       98.17
          4 |         63        0.63       98.80
          5 |         40        0.40       99.20
          6 |         20        0.20       99.40
          7 |         14        0.14       99.54
          8 |         12        0.12       99.66
          9 |          4        0.04       99.70
         10 |          8        0.08       99.78
         11 |          4        0.04       99.82
         12 |          3        0.03       99.85
         13 |          1        0.01       99.86
         14 |          2        0.02       99.88
         17 |          1        0.01       99.89
         18 |          1        0.01       99.90
         26 |          1        0.01       99.91
         28 |          1        0.01       99.92
         29 |          1        0.01       99.93
         31 |          1        0.01       99.94
         34 |          1        0.01       99.95
         41 |          1        0.01       99.96
         57 |          1        0.01       99.97
         62 |          1        0.01       99.98
         68 |          1        0.01       99.99
         90 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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