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

      state |
     number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,066       10.66       10.66
          2 |        101        1.01       11.67
          4 |      1,039       10.39       22.06
          5 |        676        6.76       28.82
          6 |      4,295       42.95       71.77
          8 |        686        6.86       78.63
          9 |        342        3.42       82.05
         10 |        166        1.66       83.71
         11 |         26        0.26       83.97
         12 |      1,603       16.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016