Frequencies for first 10,000 rows of pct012m127 variable in sf12010880us32 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,785       97.85       97.85
          1 |        182        1.82       99.67
          2 |         26        0.26       99.93
          3 |          6        0.06       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017