Frequencies for first 10,000 rows of pct012e053 variable in sf12010860us24 dataset :

   50 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,751       97.51       97.51
          1 |        226        2.26       99.77
          2 |         17        0.17       99.94
          3 |          4        0.04       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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