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

 GVW RATING |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,125       91.25       91.25
          1 |          5        0.05       91.30
          2 |        111        1.11       92.41
          3 |        660        6.60       99.01
          9 |         98        0.98       99.99
          . |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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