Frequencies for first 10,000 rows of county variable in person dataset :

     County |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        264        2.64        2.64
          3 |        261        2.61        5.25
          5 |        205        2.05        7.30
          7 |        163        1.63        8.93
          9 |         91        0.91        9.84
         11 |         23        0.23       10.07
         12 |         34        0.34       10.41
         13 |        971        9.71       20.12
         15 |        233        2.33       22.45
         17 |        160        1.60       24.05
         19 |        534        5.34       29.39
         20 |         50        0.50       29.89
         21 |        229        2.29       32.18
         23 |         68        0.68       32.86
         25 |        171        1.71       34.57
         27 |        106        1.06       35.63
         29 |        155        1.55       37.18
         31 |         77        0.77       37.95
         33 |         66        0.66       38.61
         35 |         81        0.81       39.42
         37 |        865        8.65       48.07
         39 |         46        0.46       48.53
         41 |         47        0.47       49.00
         43 |         86        0.86       49.86
         45 |         60        0.60       50.46
         47 |        102        1.02       51.48
         49 |         55        0.55       52.03
         51 |         62        0.62       52.65
         53 |         97        0.97       53.62
         55 |         80        0.80       54.42
         57 |         55        0.55       54.97
         59 |        285        2.85       57.82
         61 |         73        0.73       58.55
         63 |         43        0.43       58.98
         65 |        242        2.42       61.40
         67 |        169        1.69       63.09
         69 |        106        1.06       64.15
         71 |        287        2.87       67.02
         73 |        530        5.30       72.32
         75 |         50        0.50       72.82
         77 |        109        1.09       73.91
         79 |         76        0.76       74.67
         81 |         78        0.78       75.45
         83 |         83        0.83       76.28
         85 |        129        1.29       77.57
         87 |         59        0.59       78.16
         89 |        154        1.54       79.70
         90 |         16        0.16       79.86
         91 |         19        0.19       80.05
         93 |         71        0.71       80.76
         95 |        117        1.17       81.93
         97 |        223        2.23       84.16
         99 |         46        0.46       84.62
        101 |        115        1.15       85.77
        103 |         72        0.72       86.49
        105 |         21        0.21       86.70
        107 |         88        0.88       87.58
        109 |         55        0.55       88.13
        110 |          9        0.09       88.22
        111 |        114        1.14       89.36
        113 |         74        0.74       90.10
        115 |        108        1.08       91.18
        117 |         71        0.71       91.89
        119 |        115        1.15       93.04
        121 |         65        0.65       93.69
        122 |         21        0.21       93.90
        123 |         29        0.29       94.19
        125 |        147        1.47       95.66
        127 |         53        0.53       96.19
        129 |         19        0.19       96.38
        130 |          2        0.02       96.40
        131 |         47        0.47       96.87
        133 |         42        0.42       97.29
        135 |         19        0.19       97.48
        137 |          5        0.05       97.53
        139 |         24        0.24       97.77
        141 |         15        0.15       97.92
        143 |         50        0.50       98.42
        145 |         35        0.35       98.77
        147 |          4        0.04       98.81
        149 |         22        0.22       99.03
        150 |          2        0.02       99.05
        170 |         52        0.52       99.57
        180 |          2        0.02       99.59
        188 |          2        0.02       99.61
        201 |          5        0.05       99.66
        220 |          3        0.03       99.69
        261 |          7        0.07       99.76
        290 |          9        0.09       99.85
        997 |         15        0.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016