Frequencies for first 10,000 rows of pct012l074 variable in sf12000860us27 dataset :

   71 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,645       86.45       86.45
          1 |        669        6.69       93.14
          2 |        285        2.85       95.99
          3 |        139        1.39       97.38
          4 |         63        0.63       98.01
          5 |         42        0.42       98.43
          6 |         32        0.32       98.75
          7 |         31        0.31       99.06
          8 |         19        0.19       99.25
          9 |          8        0.08       99.33
         10 |          8        0.08       99.41
         11 |          8        0.08       99.49
         12 |          3        0.03       99.52
         13 |          8        0.08       99.60
         14 |          3        0.03       99.63
         15 |          2        0.02       99.65
         16 |          3        0.03       99.68
         17 |          3        0.03       99.71
         18 |          2        0.02       99.73
         19 |          2        0.02       99.75
         20 |          5        0.05       99.80
         21 |          2        0.02       99.82
         22 |          2        0.02       99.84
         23 |          4        0.04       99.88
         24 |          3        0.03       99.91
         30 |          1        0.01       99.92
         34 |          1        0.01       99.93
         38 |          1        0.01       99.94
         47 |          1        0.01       99.95
         55 |          1        0.01       99.96
         57 |          1        0.01       99.97
         79 |          1        0.01       99.98
         93 |          1        0.01       99.99
        168 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017