Frequencies for first 10,000 rows of clmn_num variable in snf_alpha2540_96_2002

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      3,922       39.22       39.22
       0100 |      2,804       28.04       67.26
       0101 |          1        0.01       67.27
       0200 |        783        7.83       75.10
       0201 |          1        0.01       75.11
       0300 |        900        9.00       84.11
       0400 |        283        2.83       86.94
       0500 |        206        2.06       89.00
       0600 |        339        3.39       92.39
       0700 |         98        0.98       93.37
       0800 |         98        0.98       94.35
       0801 |          1        0.01       94.36
       0900 |         97        0.97       95.33
       1000 |         86        0.86       96.19
       1100 |         65        0.65       96.84
       1200 |         95        0.95       97.79
       1300 |         97        0.97       98.76
       1301 |          7        0.07       98.83
       1400 |         55        0.55       99.38
       1500 |         62        0.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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