Frequencies for first 10,000 rows of clmn_num variable in snf_nmrc2540_96_2007_

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0100 |      2,796       27.96       27.96
       0200 |      4,861       48.61       76.57
       0400 |        785        7.85       84.42
       0600 |      1,558       15.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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