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

       RDWY |
   FUNCTION |
      CLASS |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,306       13.06       13.06
          2 |      1,204       12.04       25.10
          3 |        906        9.06       34.16
          4 |      1,283       12.83       46.99
          5 |        243        2.43       49.42
          6 |        678        6.78       56.20
          9 |         17        0.17       56.37
         11 |        618        6.18       62.55
         12 |        380        3.80       66.35
         13 |      1,540       15.40       81.75
         14 |      1,071       10.71       92.46
         15 |        337        3.37       95.83
         16 |        382        3.82       99.65
         19 |         13        0.13       99.78
         99 |         22        0.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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