Frequencies for first 10,000 rows of pct012o083 variable in sf12000860us30 dataset :

   80 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,291       92.91       92.91
          1 |        574        5.74       98.65
          2 |         97        0.97       99.62
          3 |         21        0.21       99.83
          4 |          6        0.06       99.89
          5 |          3        0.03       99.92
          6 |          5        0.05       99.97
          7 |          1        0.01       99.98
          8 |          1        0.01       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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