Frequencies for first 10,000 rows of pct012o015 variable in sf12000860us30 dataset :

   12 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,426       64.26       64.26
          1 |      1,499       14.99       79.25
          2 |        658        6.58       85.83
          3 |        390        3.90       89.73
          4 |        273        2.73       92.46
          5 |        184        1.84       94.30
          6 |        136        1.36       95.66
          7 |         98        0.98       96.64
          8 |         72        0.72       97.36
          9 |         43        0.43       97.79
         10 |         46        0.46       98.25
         11 |         39        0.39       98.64
         12 |         20        0.20       98.84
         13 |         21        0.21       99.05
         14 |         21        0.21       99.26
         15 |         13        0.13       99.39
         16 |         11        0.11       99.50
         17 |          7        0.07       99.57
         18 |          8        0.08       99.65
         19 |          6        0.06       99.71
         20 |          2        0.02       99.73
         21 |          3        0.03       99.76
         22 |          2        0.02       99.78
         23 |          5        0.05       99.83
         24 |          2        0.02       99.85
         25 |          1        0.01       99.86
         26 |          2        0.02       99.88
         27 |          1        0.01       99.89
         28 |          3        0.03       99.92
         31 |          3        0.03       99.95
         33 |          1        0.01       99.96
         34 |          1        0.01       99.97
         35 |          1        0.01       99.98
         48 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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