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

   vin body |
       type |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,317       13.17       13.17
         2D |         31        0.31       13.48
         2H |        185        1.85       15.33
         2T |          7        0.07       15.40
         2W |         47        0.47       15.87
         3C |         77        0.77       16.64
         3P |         13        0.13       16.77
         4B |          4        0.04       16.81
         4C |        249        2.49       19.30
         4D |      2,556       25.56       44.86
         4H |         80        0.80       45.66
         4W |        316        3.16       48.82
         5D |          2        0.02       48.84
         AT |         41        0.41       49.25
         BU |         21        0.21       49.46
         C4 |          6        0.06       49.52
         CB |         43        0.43       49.95
         CC |         62        0.62       50.57
         CG |         30        0.30       50.87
         CH |         14        0.14       51.01
         CP |        469        4.69       55.70
         CV |        109        1.09       56.79
         CW |        541        5.41       62.20
         EC |          5        0.05       62.25
         EN |         14        0.14       62.39
         ES |        176        1.76       64.15
         GL |          1        0.01       64.16
         IC |          1        0.01       64.17
         MH |         12        0.12       64.29
         MS |          9        0.09       64.38
         MX |          6        0.06       64.44
         PC |        281        2.81       67.25
         PK |        394        3.94       71.19
         PS |          1        0.01       71.20
         RC |        226        2.26       73.46
         RD |          5        0.05       73.51
         RS |        420        4.20       77.71
         SN |          3        0.03       77.74
         SP |          9        0.09       77.83
         SV |        236        2.36       80.19
         SW |         82        0.82       81.01
          T |          4        0.04       81.05
         TB |         16        0.16       81.21
         TR |        351        3.51       84.72
         UT |      1,488       14.88       99.60
         YY |         40        0.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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