Frequencies for first 10,000 rows of road_fnc variable in person dataset :

       RDWY |
   FUNCTION |
      CLASS |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,157       11.57       11.57
          2 |      1,207       12.07       23.64
          3 |        945        9.45       33.09
          4 |      1,361       13.61       46.70
          5 |        192        1.92       48.62
          6 |        626        6.26       54.88
          9 |         16        0.16       55.04
         11 |        581        5.81       60.85
         12 |        299        2.99       63.84
         13 |      1,829       18.29       82.13
         14 |      1,069       10.69       92.82
         15 |        279        2.79       95.61
         16 |        421        4.21       99.82
         19 |          1        0.01       99.83
         99 |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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