Frequencies for first 10,000 rows of mcarr_i1 variable in vehicle dataset :

       MCID |
    ISSUING |
  AUTHORITY |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,074       90.74       90.74
          1 |          2        0.02       90.76
          2 |          3        0.03       90.79
          6 |        150        1.50       92.29
          8 |          1        0.01       92.30
         26 |          1        0.01       92.31
         27 |          1        0.01       92.32
         49 |          1        0.01       92.33
         51 |          1        0.01       92.34
         56 |          1        0.01       92.35
         57 |        562        5.62       97.97
         58 |          6        0.06       98.03
         88 |         60        0.60       98.63
         99 |        137        1.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016