Frequencies for first 10,000 rows of pct012m146 variable in sf12010880us32 dataset :

   39 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,826       98.26       98.26
          1 |        164        1.64       99.90
          2 |          8        0.08       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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