Frequencies for first 10,000 rows of me_rout variable in natl2013 dataset :

    Route & |
  Method of |
   Delivery |
        RFP |
620=f_md_ro |
      ute R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,318       73.18       73.18
          2 |         69        0.69       73.87
          3 |        221        2.21       76.08
          4 |      2,387       23.87       99.95
          9 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015