Frequencies for first 10,000 rows of pldel variable in linkco1991us_num dataset :

   Place or |
Facility of |
   Delivery |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,830       98.30       98.30
          2 |         20        0.20       98.50
          3 |          3        0.03       98.53
          4 |        122        1.22       99.75
          5 |         24        0.24       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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