Frequencies for first 10,000 rows of exmwi12d variable in namcs2002 dataset :

       Exam |
write-in #1 |
  - 2 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
         00 |      7,486       74.86       74.86
         75 |          3        0.03       74.89
         87 |          1        0.01       74.90
         88 |          1        0.01       74.91
         89 |      2,096       20.96       95.87
         90 |          1        0.01       95.88
         91 |          1        0.01       95.89
         93 |         11        0.11       96.00
         94 |         12        0.12       96.12
         95 |        351        3.51       99.63
         99 |         37        0.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016