Frequencies for dr_cf2 variable in vehicle dataset :

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        185       39.19       39.19
         23 |          1        0.21       39.41
         28 |         18        3.81       43.22
         29 |          8        1.69       44.92
         31 |          1        0.21       45.13
         35 |          8        1.69       46.82
         36 |        161       34.11       80.93
         38 |         64       13.56       94.49
         39 |          2        0.42       94.92
         51 |         19        4.03       98.94
         87 |          1        0.21       99.15
         90 |          4        0.85      100.00
------------+-----------------------------------
      Total |        472      100.00

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