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

       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          2        0.02        0.02
          2 |        175        1.75        1.77
          6 |         83        0.83        2.60
          7 |        597        5.97        8.57
          9 |         96        0.96        9.53
         10 |          5        0.05        9.58
         12 |      1,818       18.18       27.76
         13 |         88        0.88       28.64
         14 |        174        1.74       30.38
         18 |        195        1.95       32.33
         19 |         95        0.95       33.28
         20 |      1,681       16.81       50.09
         21 |        203        2.03       52.12
         22 |        226        2.26       54.38
         23 |        297        2.97       57.35
         24 |         91        0.91       58.26
         30 |         46        0.46       58.72
         32 |          3        0.03       58.75
         34 |         61        0.61       59.36
         35 |        422        4.22       63.58
         37 |        581        5.81       69.39
         38 |         72        0.72       70.11
         39 |         12        0.12       70.23
         41 |        108        1.08       71.31
         42 |         31        0.31       71.62
         45 |          5        0.05       71.67
         48 |         38        0.38       72.05
         49 |        615        6.15       78.20
         51 |         56        0.56       78.76
         52 |         83        0.83       79.59
         53 |         85        0.85       80.44
         54 |         89        0.89       81.33
         55 |         82        0.82       82.15
         58 |         20        0.20       82.35
         59 |         32        0.32       82.67
         60 |          4        0.04       82.71
         62 |          7        0.07       82.78
         63 |         72        0.72       83.50
         64 |         21        0.21       83.71
         69 |          1        0.01       83.72
         72 |        132        1.32       85.04
         73 |         48        0.48       85.52
         74 |          1        0.01       85.53
         76 |         58        0.58       86.11
         82 |        145        1.45       87.56
         84 |        121        1.21       88.77
         85 |         60        0.60       89.37
         86 |         34        0.34       89.71
         87 |         78        0.78       90.49
         89 |         15        0.15       90.64
         90 |          6        0.06       90.70
         93 |          2        0.02       90.72
         98 |        104        1.04       91.76
         99 |        193        1.93       93.69
          . |        631        6.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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