Frequencies for first 10,000 rows of pct012l082 variable in sf12000860us27 dataset :

   79 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,155       91.55       91.55
          1 |        507        5.07       96.62
          2 |        160        1.60       98.22
          3 |         51        0.51       98.73
          4 |         43        0.43       99.16
          5 |         20        0.20       99.36
          6 |         14        0.14       99.50
          7 |         11        0.11       99.61
          8 |         12        0.12       99.73
          9 |          2        0.02       99.75
         10 |          3        0.03       99.78
         11 |          8        0.08       99.86
         12 |          1        0.01       99.87
         13 |          1        0.01       99.88
         15 |          1        0.01       99.89
         16 |          1        0.01       99.90
         17 |          2        0.02       99.92
         19 |          1        0.01       99.93
         24 |          1        0.01       99.94
         27 |          1        0.01       99.95
         29 |          1        0.01       99.96
         31 |          1        0.01       99.97
         32 |          1        0.01       99.98
         68 |          1        0.01       99.99
         95 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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