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

      state |
     number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,117       11.17       11.17
          2 |         67        0.67       11.84
          4 |      1,173       11.73       23.57
          5 |        659        6.59       30.16
          6 |      4,263       42.63       72.79
          8 |        631        6.31       79.10
          9 |        391        3.91       83.01
         10 |        150        1.50       84.51
         11 |         31        0.31       84.82
         12 |      1,518       15.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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