Frequencies for first 10,000 rows of pct012o036 variable in sf12010860us34 dataset :

   33 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,057       70.57       70.57
          1 |      1,305       13.05       83.62
          2 |        617        6.17       89.79
          3 |        337        3.37       93.16
          4 |        202        2.02       95.18
          5 |        147        1.47       96.65
          6 |        105        1.05       97.70
          7 |         71        0.71       98.41
          8 |         45        0.45       98.86
          9 |         37        0.37       99.23
         10 |         25        0.25       99.48
         11 |         11        0.11       99.59
         12 |          9        0.09       99.68
         13 |          5        0.05       99.73
         14 |          8        0.08       99.81
         15 |          4        0.04       99.85
         16 |          2        0.02       99.87
         17 |          2        0.02       99.89
         18 |          1        0.01       99.90
         19 |          4        0.04       99.94
         20 |          1        0.01       99.95
         22 |          1        0.01       99.96
         26 |          1        0.01       99.97
         31 |          1        0.01       99.98
         32 |          1        0.01       99.99
         38 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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