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

     County |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          2        0.02        0.02
          1 |        244        2.44        2.46
          3 |        161        1.61        4.07
          5 |        229        2.29        6.36
          7 |        189        1.89        8.25
          9 |        104        1.04        9.29
         10 |          2        0.02        9.31
         11 |         14        0.14        9.45
         12 |         34        0.34        9.79
         13 |      1,086       10.86       20.65
         15 |        222        2.22       22.87
         17 |        158        1.58       24.45
         19 |        439        4.39       28.84
         20 |         59        0.59       29.43
         21 |        202        2.02       31.45
         23 |         71        0.71       32.16
         25 |        194        1.94       34.10
         27 |        137        1.37       35.47
         29 |        130        1.30       36.77
         31 |         77        0.77       37.54
         33 |         48        0.48       38.02
         35 |         42        0.42       38.44
         37 |        811        8.11       46.55
         39 |         65        0.65       47.20
         41 |         21        0.21       47.41
         43 |         77        0.77       48.18
         45 |         82        0.82       49.00
         47 |         99        0.99       49.99
         49 |         58        0.58       50.57
         51 |         89        0.89       51.46
         53 |         71        0.71       52.17
         55 |         99        0.99       53.16
         57 |         42        0.42       53.58
         59 |        228        2.28       55.86
         61 |         48        0.48       56.34
         63 |         57        0.57       56.91
         65 |        246        2.46       59.37
         67 |        135        1.35       60.72
         69 |        147        1.47       62.19
         70 |          2        0.02       62.21
         71 |        310        3.10       65.31
         73 |        571        5.71       71.02
         75 |         92        0.92       71.94
         77 |        134        1.34       73.28
         79 |         69        0.69       73.97
         81 |         89        0.89       74.86
         83 |         59        0.59       75.45
         85 |        141        1.41       76.86
         87 |         74        0.74       77.60
         89 |         97        0.97       78.57
         90 |         30        0.30       78.87
         91 |         56        0.56       79.43
         93 |         52        0.52       79.95
         95 |        142        1.42       81.37
         97 |        221        2.21       83.58
         99 |         86        0.86       84.44
        101 |        110        1.10       85.54
        103 |         89        0.89       86.43
        105 |         33        0.33       86.76
        107 |        119        1.19       87.95
        109 |         28        0.28       88.23
        110 |         11        0.11       88.34
        111 |        126        1.26       89.60
        113 |         64        0.64       90.24
        115 |         68        0.68       90.92
        117 |         73        0.73       91.65
        119 |        137        1.37       93.02
        121 |         56        0.56       93.58
        122 |         13        0.13       93.71
        123 |         63        0.63       94.34
        125 |         84        0.84       95.18
        127 |         41        0.41       95.59
        129 |         22        0.22       95.81
        130 |          3        0.03       95.84
        131 |         80        0.80       96.64
        133 |         18        0.18       96.82
        135 |         18        0.18       97.00
        137 |         10        0.10       97.10
        139 |         26        0.26       97.36
        141 |         16        0.16       97.52
        143 |         50        0.50       98.02
        145 |         31        0.31       98.33
        147 |          8        0.08       98.41
        149 |          8        0.08       98.49
        150 |          2        0.02       98.51
        170 |         54        0.54       99.05
        180 |          8        0.08       99.13
        185 |          1        0.01       99.14
        188 |          2        0.02       99.16
        201 |          2        0.02       99.18
        240 |         44        0.44       99.62
        261 |         19        0.19       99.81
        270 |          4        0.04       99.85
        280 |          2        0.02       99.87
        290 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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