Frequencies for first 10,000 rows of pct012k012 variable in sf12010860us30 dataset :

    9 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,888       88.88       88.88
          1 |        802        8.02       96.90
          2 |        188        1.88       98.78
          3 |         56        0.56       99.34
          4 |         19        0.19       99.53
          5 |         15        0.15       99.68
          6 |          8        0.08       99.76
          7 |          6        0.06       99.82
          8 |          2        0.02       99.84
          9 |          1        0.01       99.85
         11 |          2        0.02       99.87
         12 |          1        0.01       99.88
         17 |          1        0.01       99.89
         18 |          1        0.01       99.90
         21 |          1        0.01       99.91
         22 |          1        0.01       99.92
         28 |          1        0.01       99.93
         45 |          1        0.01       99.94
         53 |          1        0.01       99.95
         54 |          1        0.01       99.96
         58 |          1        0.01       99.97
         61 |          1        0.01       99.98
         80 |          1        0.01       99.99
         90 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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