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

    vehicle |
       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.01        0.01
          2 |        226        2.26        2.27
          3 |          9        0.09        2.36
          6 |        117        1.17        3.53
          7 |        533        5.33        8.86
          9 |         22        0.22        9.08
         10 |          1        0.01        9.09
         12 |      1,336       13.36       22.45
         13 |         52        0.52       22.97
         14 |         73        0.73       23.70
         18 |        100        1.00       24.70
         19 |         80        0.80       25.50
         20 |      1,373       13.73       39.23
         21 |         78        0.78       40.01
         22 |        136        1.36       41.37
         23 |        308        3.08       44.45
         24 |         79        0.79       45.24
         30 |         98        0.98       46.22
         32 |         17        0.17       46.39
         34 |         87        0.87       47.26
         35 |        433        4.33       51.59
         36 |          1        0.01       51.60
         37 |        756        7.56       59.16
         38 |         34        0.34       59.50
         39 |          3        0.03       59.53
         41 |        110        1.10       60.63
         42 |         81        0.81       61.44
         44 |          1        0.01       61.45
         45 |          7        0.07       61.52
         47 |          5        0.05       61.57
         48 |         43        0.43       62.00
         49 |        946        9.46       71.46
         50 |          7        0.07       71.53
         51 |         62        0.62       72.15
         52 |        139        1.39       73.54
         53 |        127        1.27       74.81
         54 |         77        0.77       75.58
         55 |        103        1.03       76.61
         58 |         48        0.48       77.09
         59 |         74        0.74       77.83
         62 |         18        0.18       78.01
         63 |        111        1.11       79.12
         64 |          5        0.05       79.17
         67 |          2        0.02       79.19
         69 |          6        0.06       79.25
         71 |          8        0.08       79.33
         72 |        255        2.55       81.88
         73 |         72        0.72       82.60
         74 |          1        0.01       82.61
         76 |        141        1.41       84.02
         77 |          3        0.03       84.05
         82 |        154        1.54       85.59
         83 |          1        0.01       85.60
         84 |         88        0.88       86.48
         85 |         46        0.46       86.94
         86 |         30        0.30       87.24
         87 |         66        0.66       87.90
         89 |          4        0.04       87.94
         90 |          6        0.06       88.00
         92 |          4        0.04       88.04
         93 |         16        0.16       88.20
         94 |          4        0.04       88.24
         98 |        130        1.30       89.54
         99 |        171        1.71       91.25
          . |        875        8.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016