Frequencies for first 10,000 rows of pct012k130 variable in sf12000860us26 dataset :

   23 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,020       90.20       90.20
          1 |        694        6.94       97.14
          2 |        160        1.60       98.74
          3 |         61        0.61       99.35
          4 |         27        0.27       99.62
          5 |         10        0.10       99.72
          6 |          5        0.05       99.77
          7 |          6        0.06       99.83
          8 |          1        0.01       99.84
          9 |          1        0.01       99.85
         10 |          2        0.02       99.87
         12 |          1        0.01       99.88
         13 |          1        0.01       99.89
         15 |          2        0.02       99.91
         17 |          1        0.01       99.92
         21 |          1        0.01       99.93
         28 |          1        0.01       99.94
         34 |          1        0.01       99.95
         40 |          1        0.01       99.96
         53 |          1        0.01       99.97
         63 |          1        0.01       99.98
         72 |          1        0.01       99.99
         76 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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