Frequencies for first 10,000 rows of pct012m119 variable in sf12010880us32 dataset :

   12 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,897       98.97       98.97
          1 |         90        0.90       99.87
          2 |         12        0.12       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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