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 |        153        1.53        3.19
          5 |        193        1.93        5.12
          7 |        138        1.38        6.50
          9 |         65        0.65        7.15
         11 |         20        0.20        7.35
         12 |         49        0.49        7.84
         13 |      1,219       12.19       20.03
         15 |        248        2.48       22.51
         16 |          1        0.01       22.52
         17 |        145        1.45       23.97
         19 |        486        4.86       28.83
         20 |         55        0.55       29.38
         21 |        187        1.87       31.25
         23 |         69        0.69       31.94
         25 |        199        1.99       33.93
         27 |        139        1.39       35.32
         29 |        140        1.40       36.72
         31 |         77        0.77       37.49
         33 |         87        0.87       38.36
         35 |         83        0.83       39.19
         37 |        668        6.68       45.87
         39 |         58        0.58       46.45
         41 |         39        0.39       46.84
         43 |         71        0.71       47.55
         45 |         65        0.65       48.20
         47 |        103        1.03       49.23
         49 |         64        0.64       49.87
         50 |          7        0.07       49.94
         51 |        103        1.03       50.97
         53 |         67        0.67       51.64
         55 |        116        1.16       52.80
         57 |         53        0.53       53.33
         59 |        203        2.03       55.36
         61 |         43        0.43       55.79
         63 |         36        0.36       56.15
         65 |        222        2.22       58.37
         67 |        123        1.23       59.60
         68 |          1        0.01       59.61
         69 |        118        1.18       60.79
         71 |        352        3.52       64.31
         73 |        554        5.54       69.85
         75 |         51        0.51       70.36
         77 |        141        1.41       71.77
         79 |         42        0.42       72.19
         81 |         79        0.79       72.98
         83 |        112        1.12       74.10
         85 |        120        1.20       75.30
         87 |         49        0.49       75.79
         89 |        153        1.53       77.32
         90 |         28        0.28       77.60
         91 |         31        0.31       77.91
         93 |         61        0.61       78.52
         95 |        138        1.38       79.90
         97 |        232        2.32       82.22
         99 |         32        0.32       82.54
        101 |        113        1.13       83.67
        103 |         86        0.86       84.53
        105 |         42        0.42       84.95
        107 |         88        0.88       85.83
        109 |         43        0.43       86.26
        110 |          3        0.03       86.29
        111 |         78        0.78       87.07
        113 |         90        0.90       87.97
        115 |         89        0.89       88.86
        117 |         99        0.99       89.85
        119 |        119        1.19       91.04
        121 |        101        1.01       92.05
        122 |         34        0.34       92.39
        123 |         60        0.60       92.99
        125 |        156        1.56       94.55
        127 |         81        0.81       95.36
        129 |         74        0.74       96.10
        130 |          3        0.03       96.13
        131 |         56        0.56       96.69
        133 |         35        0.35       97.04
        135 |         17        0.17       97.21
        137 |         13        0.13       97.34
        139 |         47        0.47       97.81
        141 |         41        0.41       98.22
        143 |         66        0.66       98.88
        145 |         51        0.51       99.39
        147 |          3        0.03       99.42
        149 |         16        0.16       99.58
        170 |         17        0.17       99.75
        180 |          2        0.02       99.77
        185 |          3        0.03       99.80
        188 |          1        0.01       99.81
        201 |          1        0.01       99.82
        261 |          7        0.07       99.89
        270 |          1        0.01       99.90
        290 |          1        0.01       99.91
        999 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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