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

Total Birth |
      Order |
 Recode U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,486       34.86       34.86
          2 |      2,870       28.70       63.56
          3 |      1,820       18.20       81.76
          4 |        929        9.29       91.05
          5 |        443        4.43       95.48
          6 |        234        2.34       97.82
          7 |        104        1.04       98.86
          8 |        100        1.00       99.86
          9 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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