Frequencies for first 10,000 rows of clmn_num variable in snf_nmrc2540_96_2003_

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0100 |      2,759       27.59       27.59
       0200 |      4,871       48.71       76.30
       0400 |        687        6.87       83.17
       0600 |      1,683       16.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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