Frequencies for first 10,000 rows of pmsarank variable in morg89 dataset :

       PMSA |
    ranking |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,823       38.23       38.23
          2 |        761        7.61       45.84
          3 |        234        2.34       48.18
          4 |         86        0.86       49.04
          5 |         74        0.74       49.78
          6 |         29        0.29       50.07
          9 |         32        0.32       50.39
          . |      4,961       49.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Mar 2017