Frequencies for first 10,000 rows of cityresb variable in linkco1991us_num dataset :

    City of |
  Residence |
      (NCHS |
   Codes) - |
      Birth |      Freq.     Percent        Cum.
------------+-----------------------------------
        001 |        232        2.32        2.32
        003 |          3        0.03        2.35
        004 |         95        0.95        3.30
        008 |         82        0.82        4.12
        009 |         96        0.96        5.08
        010 |          1        0.01        5.09
        011 |        172        1.72        6.81
        012 |          1        0.01        6.82
        016 |         70        0.70        7.52
        023 |          2        0.02        7.54
        026 |          1        0.01        7.55
        030 |          2        0.02        7.57
        032 |          1        0.01        7.58
        033 |        126        1.26        8.84
        047 |        166        1.66       10.50
        066 |          2        0.02       10.52
        077 |          1        0.01       10.53
        086 |         94        0.94       11.47
        112 |         82        0.82       12.29
        115 |        702        7.02       19.31
        146 |         74        0.74       20.05
        186 |        113        1.13       21.18
        194 |        152        1.52       22.70
        197 |         71        0.71       23.41
        200 |        108        1.08       24.49
        999 |      7,541       75.41       99.90
        ZZZ |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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