Frequencies for first 10,000 rows of pct012o184 variable in sf12000860us30 dataset :

   77 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,851       88.51       88.51
          1 |        836        8.36       96.87
          2 |        184        1.84       98.71
          3 |         64        0.64       99.35
          4 |         32        0.32       99.67
          5 |         14        0.14       99.81
          6 |         13        0.13       99.94
          7 |          2        0.02       99.96
          8 |          1        0.01       99.97
          9 |          1        0.01       99.98
         10 |          1        0.01       99.99
         11 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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