Frequencies for first 10,000 rows of pct012k129 variable in sf12000860us26 dataset :

   22 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,962       89.62       89.62
          1 |        745        7.45       97.07
          2 |        164        1.64       98.71
          3 |         60        0.60       99.31
          4 |         29        0.29       99.60
          5 |         10        0.10       99.70
          6 |          6        0.06       99.76
          7 |          5        0.05       99.81
          8 |          3        0.03       99.84
          9 |          2        0.02       99.86
         10 |          2        0.02       99.88
         11 |          2        0.02       99.90
         18 |          1        0.01       99.91
         22 |          1        0.01       99.92
         29 |          1        0.01       99.93
         34 |          2        0.02       99.95
         39 |          1        0.01       99.96
         40 |          1        0.01       99.97
         51 |          2        0.02       99.99
         91 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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