Frequencies for first 10,000 rows of pct012g091 variable in sf12000860us22 dataset :

   88 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,670       96.70       96.70
          1 |        269        2.69       99.39
          2 |         43        0.43       99.82
          3 |         14        0.14       99.96
          4 |          2        0.02       99.98
          5 |          1        0.01       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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