Frequencies for first 10,000 rows of ume_vac variable in natlterr2008 dataset :

 Vacuum RFP |
735=f_u_vac |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         82        0.82        0.82
          2 |      8,501       85.01       85.83
          9 |      1,417       14.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 May 2016