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

       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          4        0.04        0.04
          2 |        138        1.38        1.42
          6 |         97        0.97        2.39
          7 |        559        5.59        7.98
          9 |        179        1.79        9.77
         10 |         11        0.11        9.88
         12 |      1,747       17.47       27.35
         13 |         89        0.89       28.24
         14 |        195        1.95       30.19
         18 |        219        2.19       32.38
         19 |         91        0.91       33.29
         20 |      1,724       17.24       50.53
         21 |        269        2.69       53.22
         22 |        277        2.77       55.99
         23 |        281        2.81       58.80
         24 |         34        0.34       59.14
         30 |         65        0.65       59.79
         32 |         16        0.16       59.95
         34 |         38        0.38       60.33
         35 |        496        4.96       65.29
         37 |        450        4.50       69.79
         38 |         89        0.89       70.68
         39 |          5        0.05       70.73
         41 |        179        1.79       72.52
         42 |         30        0.30       72.82
         44 |          1        0.01       72.83
         45 |          2        0.02       72.85
         46 |          6        0.06       72.91
         47 |          2        0.02       72.93
         48 |         41        0.41       73.34
         49 |        651        6.51       79.85
         51 |         47        0.47       80.32
         52 |         95        0.95       81.27
         53 |         49        0.49       81.76
         54 |         61        0.61       82.37
         55 |         87        0.87       83.24
         56 |          5        0.05       83.29
         57 |          1        0.01       83.30
         58 |         12        0.12       83.42
         59 |         13        0.13       83.55
         60 |          4        0.04       83.59
         62 |          4        0.04       83.63
         63 |          8        0.08       83.71
         69 |          4        0.04       83.75
         71 |          1        0.01       83.76
         72 |         58        0.58       84.34
         73 |         37        0.37       84.71
         74 |          1        0.01       84.72
         75 |          2        0.02       84.74
         76 |         28        0.28       85.02
         82 |        154        1.54       86.56
         84 |        135        1.35       87.91
         85 |         68        0.68       88.59
         86 |         43        0.43       89.02
         87 |         71        0.71       89.73
         89 |         29        0.29       90.02
         98 |        125        1.25       91.27
         99 |        148        1.48       92.75
          . |        725        7.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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