Frequencies for first 10,000 rows of pct012m134 variable in sf12000860us28 dataset :

   27 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,767       97.67       97.67
          1 |        203        2.03       99.70
          2 |         26        0.26       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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