Frequencies for first 10,000 rows of pct012m152 variable in sf12000860us28 dataset :

   45 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,786       97.86       97.86
          1 |        200        2.00       99.86
          2 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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