Frequencies for first 10,000 rows of clmn_num variable in snf_alpha2540_96_2009

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      4,276       42.76       42.76
       0100 |      2,657       26.57       69.33
       0101 |          1        0.01       69.34
       0200 |      1,042       10.42       79.76
       0201 |         90        0.90       80.66
       0300 |        669        6.69       87.35
       0400 |        228        2.28       89.63
       0500 |        187        1.87       91.50
       0600 |        245        2.45       93.95
       0700 |         93        0.93       94.88
       0800 |         93        0.93       95.81
       0801 |          3        0.03       95.84
       0900 |         81        0.81       96.65
       1000 |         73        0.73       97.38
       1100 |         33        0.33       97.71
       1200 |         87        0.87       98.58
       1300 |         87        0.87       99.45
       1301 |          5        0.05       99.50
       1350 |          1        0.01       99.51
       1400 |          9        0.09       99.60
       1500 |         40        0.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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