Frequencies for first 10,000 rows of pct012m141 variable in sf12000860us28 dataset :

   34 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,787       97.87       97.87
          1 |        199        1.99       99.86
          2 |         11        0.11       99.97
          3 |          2        0.02       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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