Frequencies for first 10,000 rows of me_rout variable in natl2016 dataset :

Final Route |
& Method of |
 Delivery 1 |
Spontaneous |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      7,435       74.35       74.35
          2 |         75        0.75       75.10
          3 |        217        2.17       77.27
          4 |      2,271       22.71       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 4 Oct 2017