Frequencies for first 10,000 rows of pct012l184 variable in sf12000860us27 dataset :

   77 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,804       88.04       88.04
          1 |        645        6.45       94.49
          2 |        212        2.12       96.61
          3 |        112        1.12       97.73
          4 |         60        0.60       98.33
          5 |         47        0.47       98.80
          6 |         26        0.26       99.06
          7 |         15        0.15       99.21
          8 |         15        0.15       99.36
          9 |          8        0.08       99.44
         10 |         14        0.14       99.58
         11 |          4        0.04       99.62
         12 |          8        0.08       99.70
         13 |          4        0.04       99.74
         14 |          4        0.04       99.78
         15 |          4        0.04       99.82
         16 |          2        0.02       99.84
         17 |          3        0.03       99.87
         18 |          1        0.01       99.88
         20 |          1        0.01       99.89
         22 |          1        0.01       99.90
         25 |          1        0.01       99.91
         26 |          1        0.01       99.92
         33 |          1        0.01       99.93
         34 |          1        0.01       99.94
         43 |          1        0.01       99.95
         50 |          1        0.01       99.96
         53 |          1        0.01       99.97
         63 |          1        0.01       99.98
         64 |          1        0.01       99.99
        135 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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