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

   Previous |
   Recorded |
Suspensions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,566       85.66       85.66
          1 |        508        5.08       90.74
          2 |         99        0.99       91.73
          3 |         33        0.33       92.06
          4 |          8        0.08       92.14
          5 |          2        0.02       92.16
          6 |          1        0.01       92.17
          8 |          1        0.01       92.18
          9 |          2        0.02       92.20
         99 |        780        7.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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