Frequencies for first 10,000 rows of econds_5 variable in linkco1991us_num dataset :

Sequence of |
  condition |
     within |
part/line 5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,132       91.32       91.32
          1 |        334        3.34       94.66
          2 |        429        4.29       98.95
          3 |         86        0.86       99.81
          4 |         18        0.18       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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