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

   Previous |
   Recorded |
Suspensions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,718       87.18       87.18
          1 |        403        4.03       91.21
          2 |         98        0.98       92.19
          3 |         30        0.30       92.49
          4 |          6        0.06       92.55
          5 |          2        0.02       92.57
          6 |          1        0.01       92.58
          7 |          2        0.02       92.60
         99 |        740        7.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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