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

     County |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        222        2.22        2.22
          3 |        176        1.76        3.98
          5 |        115        1.15        5.13
          7 |        155        1.55        6.68
          9 |         53        0.53        7.21
         10 |          4        0.04        7.25
         11 |         35        0.35        7.60
         13 |      1,146       11.46       19.06
         15 |        125        1.25       20.31
         17 |        183        1.83       22.14
         19 |        572        5.72       27.86
         20 |         78        0.78       28.64
         21 |        181        1.81       30.45
         23 |         41        0.41       30.86
         25 |        184        1.84       32.70
         27 |        215        2.15       34.85
         29 |        183        1.83       36.68
         31 |         76        0.76       37.44
         33 |         43        0.43       37.87
         35 |         99        0.99       38.86
         37 |      1,079       10.79       49.65
         39 |         34        0.34       49.99
         41 |         44        0.44       50.43
         43 |         30        0.30       50.73
         45 |         59        0.59       51.32
         47 |         79        0.79       52.11
         49 |         38        0.38       52.49
         51 |         60        0.60       53.09
         53 |         89        0.89       53.98
         55 |         49        0.49       54.47
         57 |         68        0.68       55.15
         59 |        277        2.77       57.92
         60 |          4        0.04       57.96
         61 |         32        0.32       58.28
         63 |         58        0.58       58.86
         65 |        236        2.36       61.22
         67 |        142        1.42       62.64
         69 |         96        0.96       63.60
         70 |          1        0.01       63.61
         71 |        321        3.21       66.82
         73 |        522        5.22       72.04
         75 |         92        0.92       72.96
         77 |        120        1.20       74.16
         79 |         54        0.54       74.70
         80 |          3        0.03       74.73
         81 |        113        1.13       75.86
         83 |         76        0.76       76.62
         85 |        225        2.25       78.87
         87 |         50        0.50       79.37
         89 |        111        1.11       80.48
         90 |         28        0.28       80.76
         91 |         64        0.64       81.40
         93 |         75        0.75       82.15
         95 |        111        1.11       83.26
         97 |        267        2.67       85.93
         99 |         87        0.87       86.80
        101 |         89        0.89       87.69
        103 |         86        0.86       88.55
        105 |         14        0.14       88.69
        107 |        129        1.29       89.98
        109 |         41        0.41       90.39
        110 |          3        0.03       90.42
        111 |        110        1.10       91.52
        113 |         54        0.54       92.06
        115 |         49        0.49       92.55
        117 |         23        0.23       92.78
        119 |        131        1.31       94.09
        120 |         21        0.21       94.30
        121 |         41        0.41       94.71
        123 |         26        0.26       94.97
        125 |         84        0.84       95.81
        127 |         59        0.59       96.40
        129 |         24        0.24       96.64
        131 |         43        0.43       97.07
        133 |         47        0.47       97.54
        135 |         14        0.14       97.68
        137 |          5        0.05       97.73
        139 |         35        0.35       98.08
        141 |         16        0.16       98.24
        143 |         53        0.53       98.77
        145 |         15        0.15       98.92
        147 |         15        0.15       99.07
        149 |          5        0.05       99.12
        150 |          7        0.07       99.19
        160 |          5        0.05       99.24
        170 |         22        0.22       99.46
        180 |          3        0.03       99.49
        200 |          3        0.03       99.52
        210 |          9        0.09       99.61
        220 |          5        0.05       99.66
        240 |         11        0.11       99.77
        250 |          7        0.07       99.84
        260 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016