Frequencies for first 10,000 rows of pct012f086 variable in sf12000860us21 dataset :

   83 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,618       96.18       96.18
          1 |        228        2.28       98.46
          2 |         72        0.72       99.18
          3 |         28        0.28       99.46
          4 |         22        0.22       99.68
          5 |         12        0.12       99.80
          6 |          8        0.08       99.88
          7 |          2        0.02       99.90
          8 |          3        0.03       99.93
          9 |          2        0.02       99.95
         10 |          2        0.02       99.97
         11 |          2        0.02       99.99
         12 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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