Frequencies for first 10,000 rows of pct012m124 variable in sf12010880us32 dataset :

   17 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,875       98.75       98.75
          1 |        112        1.12       99.87
          2 |         11        0.11       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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