Frequencies for first 10,000 rows of pct012l099 variable in sf12010860us31 dataset :

   96 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,882       98.82       98.82
          1 |         99        0.99       99.81
          2 |         14        0.14       99.95
          3 |          1        0.01       99.96
          4 |          3        0.03       99.99
         10 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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