Frequencies for first 10,000 rows of mpcdata variable in h126f dataset :

   MPC DATA |
       FLAG |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,443       54.43       54.43
          2 |      4,557       45.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 27 Feb 2018