Frequencies for first 10,000 rows of issuerid variable in bencs2017 dataset :

  Issuer ID |      Freq.     Percent        Cum.
------------+-----------------------------------
      12303 |         90        0.90        0.90
      12538 |        180        1.80        2.70
      17017 |          9        0.09        2.79
      17100 |         45        0.45        3.24
      17454 |         18        0.18        3.42
      18756 |          9        0.09        3.51
      21989 |        243        2.43        5.94
      24106 |         54        0.54        6.48
      28725 |         18        0.18        6.66
      28732 |         36        0.36        7.02
      28899 |         36        0.36        7.38
      30045 |         81        0.81        8.19
      33851 |         18        0.18        8.37
      38344 |      2,014       20.14       28.51
      44580 |         66        0.66       29.17
      45858 |         36        0.36       29.53
      46944 |      2,229       22.29       51.82
      52147 |         36        0.36       52.18
      53613 |         54        0.54       52.72
      53901 |        294        2.94       55.66
      60075 |         54        0.54       56.20
      68707 |         36        0.36       56.56
      73836 |      4,020       40.20       96.76
      74819 |        180        1.80       98.56
      81761 |         36        0.36       98.92
      82285 |         72        0.72       99.64
      84859 |         36        0.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017