Frequencies for first 10,000 rows of me_rout variable in natl2014 dataset :

Final Route |
& Method of |
 Delivery 1 |
Spontaneous |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,192       71.92       71.92
          2 |        209        2.09       74.01
          3 |        238        2.38       76.39
          4 |      2,354       23.54       99.93
          9 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016