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

    air bag |
   deployed |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      2,458       24.58       24.58
          1 |      1,745       17.45       42.03
          2 |         53        0.53       42.56
          3 |         33        0.33       42.89
          7 |         11        0.11       43.00
          8 |        274        2.74       45.74
          9 |        746        7.46       53.20
         20 |      3,087       30.87       84.07
         28 |          3        0.03       84.10
         97 |        953        9.53       93.63
         98 |        139        1.39       95.02
         99 |        498        4.98      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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