Frequencies for first 10,000 rows of pct012e123 variable in sf12000860us20 dataset :

   16 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,752       97.52       97.52
          1 |        214        2.14       99.66
          2 |         30        0.30       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017