Frequencies for first 10,000 rows of pct012m128 variable in sf12010860us32 dataset :

   21 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,713       97.13       97.13
          1 |        226        2.26       99.39
          2 |         46        0.46       99.85
          3 |         13        0.13       99.98
          4 |          1        0.01       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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