Frequencies for first 10,000 rows of clmn_num variable in snf_alpha2540_96_2010

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      3,907       39.07       39.07
       0100 |      2,686       26.86       65.93
       0101 |          2        0.02       65.95
       0102 |          1        0.01       65.96
       0200 |      1,140       11.40       77.36
       0201 |         81        0.81       78.17
       0300 |        884        8.84       87.01
       0400 |        274        2.74       89.75
       0401 |          1        0.01       89.76
       0402 |          1        0.01       89.77
       0404 |          1        0.01       89.78
       0405 |          1        0.01       89.79
       0406 |          1        0.01       89.80
       0500 |        171        1.71       91.51
       0600 |        288        2.88       94.39
       0700 |         86        0.86       95.25
       0800 |         86        0.86       96.11
       0801 |          3        0.03       96.14
       0900 |         78        0.78       96.92
       1000 |         65        0.65       97.57
       1100 |         27        0.27       97.84
       1200 |         77        0.77       98.61
       1300 |         84        0.84       99.45
       1301 |          3        0.03       99.48
       1400 |         10        0.10       99.58
       1500 |         42        0.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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