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

 Breech RFP |
721=f_uld_b |
  reech U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        257        2.57        2.57
          2 |      8,395       83.95       86.52
          9 |      1,348       13.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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