Frequencies for first 10,000 rows of pct012m039 variable in sf12010860us32 dataset :

   36 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,812       98.12       98.12
          1 |        168        1.68       99.80
          2 |         15        0.15       99.95
          3 |          4        0.04       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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