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

       MCID |
    ISSUING |
  AUTHORITY |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,125       91.25       91.25
          1 |          1        0.01       91.26
          6 |        147        1.47       92.73
          8 |          2        0.02       92.75
          9 |          1        0.01       92.76
         12 |         48        0.48       93.24
         13 |          2        0.02       93.26
         17 |          2        0.02       93.28
         18 |          1        0.01       93.29
         34 |          1        0.01       93.30
         36 |          1        0.01       93.31
         37 |          1        0.01       93.32
         40 |          1        0.01       93.33
         47 |          1        0.01       93.34
         56 |          3        0.03       93.37
         57 |        500        5.00       98.37
         58 |          3        0.03       98.40
         88 |         45        0.45       98.85
         99 |        115        1.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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