Frequencies for first 10,000 rows of clmn_num variable in snf_nmrc2540_96_2010_

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0100 |      2,828       28.28       28.28
       0200 |      4,934       49.34       77.62
       0400 |        681        6.81       84.43
       0600 |      1,557       15.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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