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

        VIN |
  Restraint |
       type |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,964       79.64       79.64
          3 |          4        0.04       79.68
          4 |        203        2.03       81.71
          7 |         41        0.41       82.12
          A |        317        3.17       85.29
          B |         17        0.17       85.46
          C |          1        0.01       85.47
          E |        617        6.17       91.64
          F |          4        0.04       91.68
          K |         67        0.67       92.35
          L |         14        0.14       92.49
          M |        116        1.16       93.65
          R |         15        0.15       93.80
          S |         32        0.32       94.12
          U |        570        5.70       99.82
          W |         17        0.17       99.99
          Y |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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