Frequencies for first 10,000 rows of pct012c083 variable in sf12000860us18 dataset :

   80 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,808       98.08       98.08
          1 |        158        1.58       99.66
          2 |         25        0.25       99.91
          3 |          1        0.01       99.92
          4 |          3        0.03       99.95
          7 |          2        0.02       99.97
          8 |          2        0.02       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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