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

       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         31        0.31        0.31
          2 |         96        0.96        1.27
          6 |         88        0.88        2.15
          7 |        462        4.62        6.77
          9 |        172        1.72        8.49
         10 |         12        0.12        8.61
         12 |      1,732       17.32       25.93
         13 |         76        0.76       26.69
         14 |        189        1.89       28.58
         18 |        283        2.83       31.41
         19 |        101        1.01       32.42
         20 |      1,851       18.51       50.93
         21 |        361        3.61       54.54
         22 |        335        3.35       57.89
         23 |        245        2.45       60.34
         24 |          3        0.03       60.37
         29 |          1        0.01       60.38
         30 |        129        1.29       61.67
         32 |         12        0.12       61.79
         34 |         35        0.35       62.14
         35 |        549        5.49       67.63
         36 |          3        0.03       67.66
         37 |        347        3.47       71.13
         38 |         51        0.51       71.64
         39 |          5        0.05       71.69
         41 |        169        1.69       73.38
         42 |         27        0.27       73.65
         43 |          1        0.01       73.66
         44 |          3        0.03       73.69
         45 |          6        0.06       73.75
         46 |         17        0.17       73.92
         47 |          3        0.03       73.95
         48 |         74        0.74       74.69
         49 |        720        7.20       81.89
         50 |          1        0.01       81.90
         51 |         46        0.46       82.36
         52 |         43        0.43       82.79
         53 |         84        0.84       83.63
         54 |         21        0.21       83.84
         55 |         65        0.65       84.49
         57 |          5        0.05       84.54
         58 |          1        0.01       84.55
         60 |          5        0.05       84.60
         61 |          1        0.01       84.61
         69 |          4        0.04       84.65
         72 |         44        0.44       85.09
         73 |         63        0.63       85.72
         76 |         51        0.51       86.23
         82 |        111        1.11       87.34
         84 |        123        1.23       88.57
         85 |         54        0.54       89.11
         86 |         48        0.48       89.59
         87 |         53        0.53       90.12
         88 |          2        0.02       90.14
         98 |         84        0.84       90.98
         99 |        105        1.05       92.03
          . |        797        7.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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