Frequencies for first 10,000 rows of issuerid variable in bencs2016 dataset :

  Issuer ID |      Freq.     Percent        Cum.
------------+-----------------------------------
      12538 |        180        1.80        1.80
      17017 |          9        0.09        1.89
      17540 |         54        0.54        2.43
      18756 |          9        0.09        2.52
      21989 |        135        1.35        3.87
      28725 |         54        0.54        4.41
      28732 |         36        0.36        4.77
      28899 |         36        0.36        5.13
      38344 |         32        0.32        5.45
      39951 |         18        0.18        5.63
      44580 |      1,220       12.20       17.83
      45858 |         36        0.36       18.19
      47904 |         54        0.54       18.73
      58670 |          9        0.09       18.82
      73836 |      7,848       78.48       97.30
      74819 |        180        1.80       99.10
      81761 |         36        0.36       99.46
      84394 |         18        0.18       99.64
      84859 |         36        0.36      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Oct 2016