Frequencies for first 10,000 rows of pct012o157 variable in sf12010860us34 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,935       69.35       69.35
          1 |      1,475       14.75       84.10
          2 |        660        6.60       90.70
          3 |        289        2.89       93.59
          4 |        247        2.47       96.06
          5 |        137        1.37       97.43
          6 |         82        0.82       98.25
          7 |         61        0.61       98.86
          8 |         39        0.39       99.25
          9 |         23        0.23       99.48
         10 |         14        0.14       99.62
         11 |          5        0.05       99.67
         12 |         11        0.11       99.78
         13 |          7        0.07       99.85
         14 |          5        0.05       99.90
         15 |          2        0.02       99.92
         16 |          2        0.02       99.94
         19 |          2        0.02       99.96
         21 |          1        0.01       99.97
         27 |          1        0.01       99.98
         43 |          1        0.01       99.99
         61 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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