Frequencies for first 10,000 rows of clmn_num variable in snf_alpha2540_96_2007

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      4,130       41.30       41.30
       0100 |      2,537       25.37       66.67
       0101 |          2        0.02       66.69
       0200 |      1,064       10.64       77.33
       0201 |         72        0.72       78.05
       0300 |        788        7.88       85.93
       0400 |        322        3.22       89.15
       0500 |        167        1.67       90.82
       0600 |        331        3.31       94.13
       0700 |         83        0.83       94.96
       0800 |         83        0.83       95.79
       0801 |          8        0.08       95.87
       0900 |         80        0.80       96.67
       1000 |         73        0.73       97.40
       1100 |         51        0.51       97.91
       1200 |         79        0.79       98.70
       1201 |          8        0.08       98.78
       1300 |         80        0.80       99.58
       1400 |         11        0.11       99.69
       1500 |         31        0.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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