Frequencies for first 10,000 rows of pct012n020 variable in sf12010860us33 dataset :

   17 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,700       87.00       87.00
          1 |        859        8.59       95.59
          2 |        233        2.33       97.92
          3 |         89        0.89       98.81
          4 |         46        0.46       99.27
          5 |         20        0.20       99.47
          6 |         13        0.13       99.60
          7 |          7        0.07       99.67
          8 |          6        0.06       99.73
          9 |          6        0.06       99.79
         10 |          1        0.01       99.80
         11 |          1        0.01       99.81
         12 |          2        0.02       99.83
         14 |          2        0.02       99.85
         15 |          1        0.01       99.86
         16 |          3        0.03       99.89
         18 |          2        0.02       99.91
         19 |          1        0.01       99.92
         20 |          1        0.01       99.93
         21 |          1        0.01       99.94
         26 |          1        0.01       99.95
         28 |          1        0.01       99.96
         31 |          1        0.01       99.97
         40 |          1        0.01       99.98
         48 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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