Frequencies for first 10,000 rows of pct012f085 variable in sf12000860us21 dataset :

   82 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,592       95.92       95.92
          1 |        245        2.45       98.37
          2 |         63        0.63       99.00
          3 |         29        0.29       99.29
          4 |         22        0.22       99.51
          5 |         15        0.15       99.66
          6 |         13        0.13       99.79
          7 |          8        0.08       99.87
          8 |          4        0.04       99.91
          9 |          1        0.01       99.92
         10 |          3        0.03       99.95
         11 |          2        0.02       99.97
         13 |          2        0.02       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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