Frequencies for first 10,000 rows of pct012k182 variable in sf12000860us26 dataset :

   75 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,650       96.50       96.50
          1 |        296        2.96       99.46
          2 |         30        0.30       99.76
          3 |         10        0.10       99.86
          4 |          5        0.05       99.91
          5 |          1        0.01       99.92
          9 |          1        0.01       99.93
         12 |          3        0.03       99.96
         13 |          1        0.01       99.97
         16 |          1        0.01       99.98
         17 |          1        0.01       99.99
         28 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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