Frequencies for first 10,000 rows of pct012o189 variable in sf12000860us30 dataset :

   82 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,172       91.72       91.72
          1 |        629        6.29       98.01
          2 |        124        1.24       99.25
          3 |         42        0.42       99.67
          4 |         15        0.15       99.82
          5 |         10        0.10       99.92
          6 |          4        0.04       99.96
          7 |          1        0.01       99.97
          8 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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