Frequencies for first 10,000 rows of clmn_num variable in snf_nmrc2540_96_1995_

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0100 |      2,615       26.15       26.15
       0200 |      4,408       44.08       70.23
       0400 |      1,117       11.17       81.40
       0600 |      1,860       18.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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