Frequencies for first 10,000 rows of pct012n167 variable in sf12000860us29 dataset :

   60 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,663       96.63       96.63
          1 |        250        2.50       99.13
          2 |         53        0.53       99.66
          3 |         15        0.15       99.81
          4 |          6        0.06       99.87
          5 |          4        0.04       99.91
          6 |          1        0.01       99.92
          8 |          2        0.02       99.94
          9 |          1        0.01       99.95
         10 |          1        0.01       99.96
         11 |          2        0.02       99.98
         12 |          1        0.01       99.99
         25 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017