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

     county |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        312        3.12        3.12
          3 |        143        1.43        4.55
          5 |        212        2.12        6.67
          7 |        136        1.36        8.03
          9 |        113        1.13        9.16
         10 |          4        0.04        9.20
         11 |         47        0.47        9.67
         12 |         59        0.59       10.26
         13 |        979        9.79       20.05
         15 |        245        2.45       22.50
         17 |        170        1.70       24.20
         19 |        502        5.02       29.22
         20 |        102        1.02       30.24
         21 |        170        1.70       31.94
         23 |         37        0.37       32.31
         25 |        168        1.68       33.99
         27 |        128        1.28       35.27
         29 |        164        1.64       36.91
         31 |         95        0.95       37.86
         33 |         46        0.46       38.32
         35 |         45        0.45       38.77
         37 |        926        9.26       48.03
         39 |         47        0.47       48.50
         41 |         35        0.35       48.85
         43 |         82        0.82       49.67
         45 |         62        0.62       50.29
         47 |         79        0.79       51.08
         49 |         44        0.44       51.52
         50 |          2        0.02       51.54
         51 |         63        0.63       52.17
         53 |        119        1.19       53.36
         55 |         75        0.75       54.11
         57 |         33        0.33       54.44
         59 |        230        2.30       56.74
         61 |         27        0.27       57.01
         63 |         38        0.38       57.39
         65 |        245        2.45       59.84
         67 |        127        1.27       61.11
         69 |         84        0.84       61.95
         71 |        329        3.29       65.24
         73 |        584        5.84       71.08
         75 |         77        0.77       71.85
         77 |        164        1.64       73.49
         79 |        101        1.01       74.50
         81 |        108        1.08       75.58
         83 |         65        0.65       76.23
         85 |        112        1.12       77.35
         87 |         45        0.45       77.80
         89 |        125        1.25       79.05
         90 |         17        0.17       79.22
         91 |         38        0.38       79.60
         93 |         69        0.69       80.29
         95 |         98        0.98       81.27
         97 |        246        2.46       83.73
         99 |         87        0.87       84.60
        100 |          3        0.03       84.63
        101 |        126        1.26       85.89
        103 |         83        0.83       86.72
        105 |         21        0.21       86.93
        107 |         67        0.67       87.60
        109 |         40        0.40       88.00
        110 |          6        0.06       88.06
        111 |         90        0.90       88.96
        113 |         62        0.62       89.58
        115 |        100        1.00       90.58
        116 |          9        0.09       90.67
        117 |         51        0.51       91.18
        119 |        181        1.81       92.99
        121 |         75        0.75       93.74
        122 |         27        0.27       94.01
        123 |         59        0.59       94.60
        125 |        142        1.42       96.02
        127 |         56        0.56       96.58
        129 |         14        0.14       96.72
        130 |          8        0.08       96.80
        131 |         51        0.51       97.31
        133 |         31        0.31       97.62
        135 |         13        0.13       97.75
        137 |          3        0.03       97.78
        139 |         36        0.36       98.14
        141 |          5        0.05       98.19
        143 |         49        0.49       98.68
        145 |         45        0.45       99.13
        147 |          4        0.04       99.17
        149 |          6        0.06       99.23
        150 |          3        0.03       99.26
        170 |         33        0.33       99.59
        180 |          3        0.03       99.62
        185 |          5        0.05       99.67
        188 |          2        0.02       99.69
        240 |          2        0.02       99.71
        261 |          5        0.05       99.76
        270 |          2        0.02       99.78
        290 |         15        0.15       99.93
        997 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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