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

  emergency |
        use |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,973       99.73       99.73
          1 |         14        0.14       99.87
          8 |          2        0.02       99.89
          9 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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