Frequencies for first 10,000 rows of cityres variable in natl2000 dataset :

  NCHS City |
         of |
  Residence |      Freq.     Percent        Cum.
------------+-----------------------------------
        008 |        722        7.22        7.22
        012 |          3        0.03        7.25
        023 |        333        3.33       10.58
        028 |        610        6.10       16.68
        029 |        592        5.92       22.60
        041 |          1        0.01       22.61
        999 |      7,739       77.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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