Frequencies for first 10,000 rows of ager variable in namcs2002 dataset :

       Age recode |      Freq.     Percent        Cum.
------------------+-----------------------------------
   Under 15 years |      1,703       17.03       17.03
      15-24 years |        774        7.74       24.77
      25-44 years |      2,158       21.58       46.35
      45-64 years |      2,776       27.76       74.11
      65-74 years |      1,274       12.74       86.85
75 years and over |      1,315       13.15      100.00
------------------+-----------------------------------
            Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016