Frequencies for first 10,000 rows of pct012k119 variable in sf12010880us30 dataset :

   12 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,204       92.04       92.04
          1 |        622        6.22       98.26
          2 |        111        1.11       99.37
          3 |         32        0.32       99.69
          4 |         17        0.17       99.86
          5 |          5        0.05       99.91
          6 |          2        0.02       99.93
          7 |          4        0.04       99.97
          8 |          1        0.01       99.98
          9 |          1        0.01       99.99
         24 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017