Frequencies for first 10,000 rows of ume_vac variable in natlterr2011 dataset :

 Vacuum RFP |
735=f_u_vac |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        146        1.46        1.46
          2 |      7,519       75.19       76.65
          9 |      2,335       23.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015