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

  Attempted |
 Vacuum RFP |
618=f_md_at |
     tvac R |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      2,536       25.36       25.36
          N |      4,345       43.45       68.81
          U |      3,050       30.50       99.31
          Y |         69        0.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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