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

     county |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          3        0.03        0.03
          1 |        163        1.63        1.66
          3 |        191        1.91        3.57
          5 |        236        2.36        5.93
          7 |        178        1.78        7.71
          9 |         81        0.81        8.52
         11 |         26        0.26        8.78
         12 |         78        0.78        9.56
         13 |      1,583       15.83       25.39
         15 |        236        2.36       27.75
         16 |          4        0.04       27.79
         17 |        169        1.69       29.48
         19 |        521        5.21       34.69
         20 |         51        0.51       35.20
         21 |        391        3.91       39.11
         23 |         95        0.95       40.06
         25 |        209        2.09       42.15
         27 |        130        1.30       43.45
         29 |        146        1.46       44.91
         31 |        107        1.07       45.98
         33 |         67        0.67       46.65
         35 |         58        0.58       47.23
         37 |        472        4.72       51.95
         39 |         74        0.74       52.69
         41 |         24        0.24       52.93
         43 |         91        0.91       53.84
         45 |         89        0.89       54.73
         47 |         80        0.80       55.53
         49 |         51        0.51       56.04
         51 |         91        0.91       56.95
         53 |         60        0.60       57.55
         55 |         72        0.72       58.27
         57 |         29        0.29       58.56
         59 |        151        1.51       60.07
         60 |          4        0.04       60.11
         61 |         36        0.36       60.47
         63 |         43        0.43       60.90
         65 |        267        2.67       63.57
         67 |         97        0.97       64.54
         68 |          6        0.06       64.60
         69 |         65        0.65       65.25
         71 |        260        2.60       67.85
         73 |        405        4.05       71.90
         75 |         50        0.50       72.40
         77 |        108        1.08       73.48
         79 |         49        0.49       73.97
         81 |        110        1.10       75.07
         83 |         90        0.90       75.97
         85 |        115        1.15       77.12
         87 |         49        0.49       77.61
         89 |        208        2.08       79.69
         90 |         29        0.29       79.98
         91 |         45        0.45       80.43
         93 |         63        0.63       81.06
         95 |         55        0.55       81.61
         97 |        288        2.88       84.49
         99 |         59        0.59       85.08
        101 |         99        0.99       86.07
        103 |        106        1.06       87.13
        105 |         28        0.28       87.41
        107 |         73        0.73       88.14
        109 |         29        0.29       88.43
        110 |          4        0.04       88.47
        111 |         71        0.71       89.18
        113 |         95        0.95       90.13
        115 |         60        0.60       90.73
        117 |         73        0.73       91.46
        119 |        192        1.92       93.38
        121 |         59        0.59       93.97
        122 |         26        0.26       94.23
        123 |         49        0.49       94.72
        125 |        107        1.07       95.79
        127 |         75        0.75       96.54
        129 |         24        0.24       96.78
        130 |          6        0.06       96.84
        131 |         86        0.86       97.70
        133 |         22        0.22       97.92
        135 |         15        0.15       98.07
        137 |          3        0.03       98.10
        139 |         10        0.10       98.20
        141 |         10        0.10       98.30
        143 |         51        0.51       98.81
        145 |         45        0.45       99.26
        147 |          8        0.08       99.34
        149 |         20        0.20       99.54
        164 |          1        0.01       99.55
        170 |         28        0.28       99.83
        180 |          9        0.09       99.92
        185 |          3        0.03       99.95
        220 |          1        0.01       99.96
        240 |          1        0.01       99.97
        261 |          2        0.02       99.99
        290 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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