Frequencies for first 10,000 rows of pct012c033 variable in sf12010860us22 dataset :

   30 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,375       83.75       83.75
          1 |        977        9.77       93.52
          2 |        290        2.90       96.42
          3 |        147        1.47       97.89
          4 |         66        0.66       98.55
          5 |         47        0.47       99.02
          6 |         32        0.32       99.34
          7 |         14        0.14       99.48
          8 |         11        0.11       99.59
          9 |          7        0.07       99.66
         10 |          9        0.09       99.75
         11 |          4        0.04       99.79
         12 |          1        0.01       99.80
         13 |          2        0.02       99.82
         14 |          3        0.03       99.85
         15 |          1        0.01       99.86
         16 |          1        0.01       99.87
         17 |          1        0.01       99.88
         18 |          1        0.01       99.89
         19 |          2        0.02       99.91
         22 |          1        0.01       99.92
         26 |          1        0.01       99.93
         27 |          1        0.01       99.94
         28 |          1        0.01       99.95
         40 |          1        0.01       99.96
         41 |          1        0.01       99.97
         55 |          1        0.01       99.98
         58 |          1        0.01       99.99
         59 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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