Frequencies for first 10,000 rows of pct012o031 variable in sf12010860us34 dataset :

   28 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,948       69.48       69.48
          1 |      1,239       12.39       81.87
          2 |        617        6.17       88.04
          3 |        343        3.43       91.47
          4 |        244        2.44       93.91
          5 |        165        1.65       95.56
          6 |        118        1.18       96.74
          7 |         85        0.85       97.59
          8 |         52        0.52       98.11
          9 |         40        0.40       98.51
         10 |         40        0.40       98.91
         11 |         22        0.22       99.13
         12 |         27        0.27       99.40
         13 |         15        0.15       99.55
         14 |          8        0.08       99.63
         15 |          7        0.07       99.70
         16 |          4        0.04       99.74
         17 |          5        0.05       99.79
         18 |          3        0.03       99.82
         19 |          5        0.05       99.87
         20 |          1        0.01       99.88
         21 |          3        0.03       99.91
         22 |          2        0.02       99.93
         23 |          2        0.02       99.95
         25 |          1        0.01       99.96
         28 |          1        0.01       99.97
         31 |          1        0.01       99.98
         39 |          1        0.01       99.99
         43 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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