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

   PREVIOUS |
SUSPENSIONS |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,338       83.38       83.38
          1 |        610        6.10       89.48
          2 |        274        2.74       92.22
          3 |        142        1.42       93.64
          4 |         76        0.76       94.40
          5 |         44        0.44       94.84
          6 |         28        0.28       95.12
          7 |         18        0.18       95.30
          8 |         10        0.10       95.40
          9 |          7        0.07       95.47
         10 |          4        0.04       95.51
         11 |          1        0.01       95.52
         12 |          3        0.03       95.55
         15 |          2        0.02       95.57
         25 |          1        0.01       95.58
         31 |          1        0.01       95.59
         99 |        379        3.79       99.38
          . |         62        0.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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