Frequencies for first 10,000 rows of clmn_num variable in snf_nmrc2540_96_2004_

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0100 |      2,884       28.84       28.84
       0200 |      4,860       48.60       77.44
       0400 |        826        8.26       85.70
       0600 |      1,430       14.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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