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

    Roadway |
    surface |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         26        0.26        0.26
          1 |      1,018       10.18       10.44
          2 |      6,209       62.09       72.53
          3 |          2        0.02       72.55
          4 |         45        0.45       73.00
          5 |         79        0.79       73.79
          7 |          3        0.03       73.82
          8 |      2,580       25.80       99.62
          9 |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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