Frequencies for mcycl_ds variable in vehnit dataset :

         CC |
DISPLACEMEN |
          T |      Freq.     Percent        Cum.
------------+-----------------------------------
        599 |          1        0.07        0.07
       1130 |          1        0.07        0.14
       1200 |          1        0.07        0.22
       1340 |          1        0.07        0.29
       1450 |          3        0.22        0.50
       9999 |         96        6.89        7.39
          . |      1,290       92.61      100.00
------------+-----------------------------------
      Total |      1,393      100.00

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