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

       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          7        0.07        0.07
          2 |        157        1.57        1.64
          3 |          2        0.02        1.66
          6 |         89        0.89        2.55
          7 |        575        5.75        8.30
          9 |        142        1.42        9.72
         10 |          8        0.08        9.80
         12 |      1,906       19.06       28.86
         13 |         94        0.94       29.80
         14 |        160        1.60       31.40
         18 |        197        1.97       33.37
         19 |        104        1.04       34.41
         20 |      1,677       16.77       51.18
         21 |        226        2.26       53.44
         22 |        261        2.61       56.05
         23 |        280        2.80       58.85
         24 |         77        0.77       59.62
         30 |         87        0.87       60.49
         32 |          1        0.01       60.50
         34 |         30        0.30       60.80
         35 |        427        4.27       65.07
         37 |        518        5.18       70.25
         38 |         90        0.90       71.15
         39 |          2        0.02       71.17
         41 |        166        1.66       72.83
         42 |         28        0.28       73.11
         44 |          1        0.01       73.12
         45 |          4        0.04       73.16
         46 |          1        0.01       73.17
         47 |          7        0.07       73.24
         48 |         26        0.26       73.50
         49 |        584        5.84       79.34
         51 |         50        0.50       79.84
         52 |        196        1.96       81.80
         53 |         59        0.59       82.39
         54 |         73        0.73       83.12
         55 |         67        0.67       83.79
         56 |          2        0.02       83.81
         58 |         13        0.13       83.94
         59 |         30        0.30       84.24
         60 |          2        0.02       84.26
         61 |          2        0.02       84.28
         62 |         11        0.11       84.39
         63 |         24        0.24       84.63
         64 |          2        0.02       84.65
         72 |         77        0.77       85.42
         73 |         39        0.39       85.81
         76 |         44        0.44       86.25
         81 |          1        0.01       86.26
         82 |        149        1.49       87.75
         83 |          3        0.03       87.78
         84 |         93        0.93       88.71
         85 |         44        0.44       89.15
         86 |         45        0.45       89.60
         87 |         63        0.63       90.23
         88 |          2        0.02       90.25
         89 |         26        0.26       90.51
         90 |         50        0.50       91.01
         92 |          3        0.03       91.04
         93 |          3        0.03       91.07
         94 |         12        0.12       91.19
         98 |         80        0.80       91.99
         99 |        119        1.19       93.18
          . |        682        6.82      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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