Frequencies for first 10,000 rows of clmn_num variable in snf_nmrc2540_96_2009_

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0100 |      2,776       27.76       27.76
       0200 |      4,788       47.88       75.64
       0400 |        993        9.93       85.57
       0600 |      1,443       14.43      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018