Frequencies for pveh_sev variable in parkwork dataset :

  Extent of |
     Damage |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         25        2.50        2.50
          2 |        327       32.63       35.13
          4 |        230       22.95       58.08
          6 |        319       31.84       89.92
          8 |         25        2.50       92.42
          9 |         76        7.58      100.00
------------+-----------------------------------
      Total |      1,002      100.00

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