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

     County |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        221        2.21        2.21
          3 |        146        1.46        3.67
          5 |        272        2.72        6.39
          7 |        134        1.34        7.73
          9 |         59        0.59        8.32
         11 |         43        0.43        8.75
         12 |         74        0.74        9.49
         13 |      1,076       10.76       20.25
         15 |        223        2.23       22.48
         17 |        109        1.09       23.57
         19 |        427        4.27       27.84
         20 |         76        0.76       28.60
         21 |        226        2.26       30.86
         23 |         54        0.54       31.40
         25 |        151        1.51       32.91
         27 |         93        0.93       33.84
         29 |        153        1.53       35.37
         31 |         81        0.81       36.18
         33 |         67        0.67       36.85
         35 |         80        0.80       37.65
         37 |        842        8.42       46.07
         39 |         65        0.65       46.72
         41 |         20        0.20       46.92
         43 |         53        0.53       47.45
         45 |         60        0.60       48.05
         47 |        103        1.03       49.08
         49 |         41        0.41       49.49
         50 |          6        0.06       49.55
         51 |         67        0.67       50.22
         53 |        114        1.14       51.36
         55 |         90        0.90       52.26
         57 |         33        0.33       52.59
         59 |        257        2.57       55.16
         61 |         58        0.58       55.74
         63 |         32        0.32       56.06
         65 |        298        2.98       59.04
         67 |        129        1.29       60.33
         69 |        117        1.17       61.50
         71 |        301        3.01       64.51
         73 |        622        6.22       70.73
         74 |          3        0.03       70.76
         75 |         91        0.91       71.67
         77 |        148        1.48       73.15
         79 |         46        0.46       73.61
         81 |         89        0.89       74.50
         83 |        103        1.03       75.53
         85 |        135        1.35       76.88
         87 |         46        0.46       77.34
         89 |        154        1.54       78.88
         90 |         24        0.24       79.12
         91 |         31        0.31       79.43
         93 |         98        0.98       80.41
         95 |        109        1.09       81.50
         97 |        173        1.73       83.23
         99 |         78        0.78       84.01
        100 |          2        0.02       84.03
        101 |        122        1.22       85.25
        103 |         83        0.83       86.08
        105 |         15        0.15       86.23
        107 |        110        1.10       87.33
        109 |         24        0.24       87.57
        110 |          1        0.01       87.58
        111 |        142        1.42       89.00
        113 |         76        0.76       89.76
        115 |         95        0.95       90.71
        117 |         66        0.66       91.37
        119 |        121        1.21       92.58
        121 |         67        0.67       93.25
        122 |         38        0.38       93.63
        123 |         60        0.60       94.23
        125 |        112        1.12       95.35
        127 |         68        0.68       96.03
        129 |         35        0.35       96.38
        130 |          4        0.04       96.42
        131 |         49        0.49       96.91
        133 |         35        0.35       97.26
        135 |          5        0.05       97.31
        137 |          7        0.07       97.38
        139 |         27        0.27       97.65
        141 |         10        0.10       97.75
        143 |         69        0.69       98.44
        145 |         59        0.59       99.03
        147 |          7        0.07       99.10
        149 |         28        0.28       99.38
        170 |         39        0.39       99.77
        180 |          2        0.02       99.79
        185 |          2        0.02       99.81
        188 |          1        0.01       99.82
        231 |          2        0.02       99.84
        240 |          6        0.06       99.90
        261 |          9        0.09       99.99
        280 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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