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

   Previous |
   Recorded |
Suspensions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,363       83.63       83.63
          1 |        690        6.90       90.53
          2 |        170        1.70       92.23
          3 |         76        0.76       92.99
          4 |         43        0.43       93.42
          5 |         16        0.16       93.58
          6 |          4        0.04       93.62
          7 |          4        0.04       93.66
          8 |          3        0.03       93.69
          9 |          1        0.01       93.70
         12 |          1        0.01       93.71
         99 |        629        6.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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