Frequencies for first 10,000 rows of cityres variable in natl1998 dataset :

  NCHS City |
         of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
        008 |        726        7.26        7.26
        023 |        379        3.79       11.05
        027 |          1        0.01       11.06
        028 |        606        6.06       17.12
        029 |        556        5.56       22.68
        035 |          1        0.01       22.69
        038 |          1        0.01       22.70
        105 |          1        0.01       22.71
        999 |      7,729       77.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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