Frequencies for first 10,000 rows of air_bag variable in person dataset :

    air bag |
   deployed |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,905       29.05       29.05
          1 |      1,479       14.79       43.84
          2 |         57        0.57       44.41
          3 |         12        0.12       44.53
          7 |          3        0.03       44.56
          8 |        119        1.19       45.75
          9 |        957        9.57       55.32
         20 |      3,049       30.49       85.81
         97 |        937        9.37       95.18
         98 |         96        0.96       96.14
         99 |        386        3.86      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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