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

      State |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,165       11.65       11.65
          2 |         76        0.76       12.41
          4 |      1,005       10.05       22.46
          5 |        745        7.45       29.91
          6 |      3,691       36.91       66.82
          8 |        599        5.99       72.81
          9 |        424        4.24       77.05
         10 |        136        1.36       78.41
         11 |         28        0.28       78.69
         12 |      2,131       21.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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