Frequencies for first 10,000 rows of clmn_num variable in snf_nmrc2540_96_2008_

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0100 |      3,211       32.11       32.11
       0200 |      5,015       50.15       82.26
       0400 |        424        4.24       86.50
       0600 |      1,350       13.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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