Frequencies for first 10,000 rows of lbo_rec variable in natl2009 dataset :

 Live Birth |
      Order |
 Recode U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,054       40.54       40.54
          2 |      3,050       30.50       71.04
          3 |      1,732       17.32       88.36
          4 |        685        6.85       95.21
          5 |        259        2.59       97.80
          6 |        117        1.17       98.97
          7 |         54        0.54       99.51
          8 |         38        0.38       99.89
          9 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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