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

       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          3        0.03        0.03
          2 |        155        1.55        1.58
          6 |         74        0.74        2.32
          7 |        603        6.03        8.35
          9 |        177        1.77       10.12
         10 |          5        0.05       10.17
         12 |      1,762       17.62       27.79
         13 |         60        0.60       28.39
         14 |        202        2.02       30.41
         18 |        177        1.77       32.18
         19 |        100        1.00       33.18
         20 |      1,803       18.03       51.21
         21 |        257        2.57       53.78
         22 |        349        3.49       57.27
         23 |        311        3.11       60.38
         24 |         47        0.47       60.85
         30 |         93        0.93       61.78
         31 |          2        0.02       61.80
         32 |          1        0.01       61.81
         34 |         44        0.44       62.25
         35 |        454        4.54       66.79
         37 |        491        4.91       71.70
         38 |         52        0.52       72.22
         39 |          7        0.07       72.29
         41 |        156        1.56       73.85
         42 |         26        0.26       74.11
         45 |          7        0.07       74.18
         47 |          4        0.04       74.22
         48 |         46        0.46       74.68
         49 |        625        6.25       80.93
         50 |          1        0.01       80.94
         51 |         43        0.43       81.37
         52 |        100        1.00       82.37
         53 |         44        0.44       82.81
         54 |         50        0.50       83.31
         55 |         78        0.78       84.09
         56 |          1        0.01       84.10
         58 |          7        0.07       84.17
         59 |         25        0.25       84.42
         60 |          9        0.09       84.51
         61 |          1        0.01       84.52
         62 |          7        0.07       84.59
         63 |         12        0.12       84.71
         69 |          1        0.01       84.72
         70 |          1        0.01       84.73
         71 |          2        0.02       84.75
         72 |         70        0.70       85.45
         73 |         33        0.33       85.78
         74 |          1        0.01       85.79
         76 |         44        0.44       86.23
         82 |        168        1.68       87.91
         84 |         92        0.92       88.83
         85 |         61        0.61       89.44
         86 |         34        0.34       89.78
         87 |         69        0.69       90.47
         89 |         23        0.23       90.70
         90 |          1        0.01       90.71
         91 |          2        0.02       90.73
         92 |          9        0.09       90.82
         94 |          3        0.03       90.85
         98 |         69        0.69       91.54
         99 |        153        1.53       93.07
          . |        693        6.93      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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