Frequencies for first 10,000 rows of pct012k167 variable in sf12010860us30 dataset :

   60 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,923       89.23       89.23
          1 |        796        7.96       97.19
          2 |        201        2.01       99.20
          3 |         51        0.51       99.71
          4 |          5        0.05       99.76
          5 |          4        0.04       99.80
          6 |          2        0.02       99.82
          7 |          1        0.01       99.83
          8 |          1        0.01       99.84
          9 |          2        0.02       99.86
         10 |          2        0.02       99.88
         12 |          1        0.01       99.89
         13 |          2        0.02       99.91
         17 |          1        0.01       99.92
         19 |          1        0.01       99.93
         24 |          1        0.01       99.94
         26 |          1        0.01       99.95
         30 |          1        0.01       99.96
         36 |          1        0.01       99.97
         44 |          1        0.01       99.98
         67 |          1        0.01       99.99
         69 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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