Frequencies for first 10,000 rows of pct012m019 variable in sf12000860us28 dataset :

   16 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,816       98.16       98.16
          1 |        173        1.73       99.89
          2 |          9        0.09       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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