Frequencies for first 10,000 rows of PCT012A102 variable in sf12000860us16 dataset :

   99 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,026       90.26       90.26
          1 |        770        7.70       97.96
          2 |        141        1.41       99.37
          3 |         36        0.36       99.73
          4 |         12        0.12       99.85
          5 |         13        0.13       99.98
          6 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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