Frequencies for first 10,000 rows of pct012k129 variable in sf12010860us30 dataset :

   22 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,900       89.00       89.00
          1 |        759        7.59       96.59
          2 |        181        1.81       98.40
          3 |         81        0.81       99.21
          4 |         31        0.31       99.52
          5 |         13        0.13       99.65
          6 |         12        0.12       99.77
          7 |          3        0.03       99.80
          8 |          4        0.04       99.84
          9 |          1        0.01       99.85
         10 |          1        0.01       99.86
         11 |          1        0.01       99.87
         17 |          2        0.02       99.89
         18 |          1        0.01       99.90
         19 |          2        0.02       99.92
         25 |          1        0.01       99.93
         36 |          1        0.01       99.94
         38 |          1        0.01       99.95
         42 |          1        0.01       99.96
         47 |          1        0.01       99.97
         53 |          1        0.01       99.98
         59 |          1        0.01       99.99
         80 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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