Frequencies for first 10,000 rows of pct012k189 variable in sf12000860us26 dataset :

   82 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,805       98.05       98.05
          1 |        166        1.66       99.71
          2 |         17        0.17       99.88
          3 |          7        0.07       99.95
          7 |          2        0.02       99.97
          8 |          1        0.01       99.98
          9 |          1        0.01       99.99
         17 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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