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

   VIN Body |
       Type |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        166        1.66        1.66
         2D |        399        3.99        5.65
         2F |          8        0.08        5.73
         2H |        620        6.20       11.93
         2L |         73        0.73       12.66
         2P |          9        0.09       12.75
         2T |        426        4.26       17.01
         3D |         57        0.57       17.58
         4D |      1,463       14.63       32.21
         4H |        179        1.79       34.00
         4L |          8        0.08       34.08
         4P |         26        0.26       34.34
         4T |         51        0.51       34.85
         99 |        934        9.34       44.19
         AT |         15        0.15       44.34
         BU |          5        0.05       44.39
         CB |        110        1.10       45.49
         CC |         57        0.57       46.06
         CP |      1,091       10.91       56.97
         CV |         89        0.89       57.86
         CY |          5        0.05       57.91
         DP |          1        0.01       57.92
         DS |        215        2.15       60.07
         EN |          2        0.02       60.09
         FB |         14        0.14       60.23
         FC |          5        0.05       60.28
         GL |          6        0.06       60.34
         HB |         28        0.28       60.62
         HT |          6        0.06       60.68
         IC |          5        0.05       60.73
         LB |         16        0.16       60.89
         LL |          2        0.02       60.91
         MH |          3        0.03       60.94
         MS |         17        0.17       61.11
         MX |          3        0.03       61.14
         MY |         15        0.15       61.29
         NB |         16        0.16       61.45
         PK |      1,852       18.52       79.97
         PN |          1        0.01       79.98
         RD |          8        0.08       80.06
         RS |        614        6.14       86.20
         RT |         18        0.18       86.38
         SD |         72        0.72       87.10
         SN |          5        0.05       87.15
         ST |          1        0.01       87.16
         SV |        140        1.40       88.56
         SW |        385        3.85       92.41
          T |          3        0.03       92.44
         TB |         49        0.49       92.93
         TL |         83        0.83       93.76
         TM |         56        0.56       94.32
         UT |        328        3.28       97.60
         VN |        236        2.36       99.96
         XT |          1        0.01       99.97
         YY |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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