Frequencies for first 10,000 rows of ume_vac variable in natlterr2012 dataset :

 Vacuum RFP |
735=f_u_vac |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        117        1.17        1.17
          2 |      8,153       81.53       82.70
          9 |      1,730       17.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016