Frequencies for first 10,000 rows of pct012k208 variable in sf12010880us30 dataset :

 105 to 109 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,999       99.99       99.99
          1 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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