Frequencies for first 10,000 rows of pct012c167 variable in sf12000860us18 dataset :

   60 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,230       92.30       92.30
          1 |        586        5.86       98.16
          2 |        110        1.10       99.26
          3 |         36        0.36       99.62
          4 |         18        0.18       99.80
          5 |          4        0.04       99.84
          6 |          1        0.01       99.85
          7 |          3        0.03       99.88
         10 |          1        0.01       99.89
         11 |          1        0.01       99.90
         13 |          3        0.03       99.93
         16 |          1        0.01       99.94
         17 |          2        0.02       99.96
         24 |          1        0.01       99.97
         28 |          1        0.01       99.98
         31 |          1        0.01       99.99
         48 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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