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

    License |
      State |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,158       11.58       11.58
          2 |         97        0.97       12.55
          4 |      1,004       10.04       22.59
          5 |        584        5.84       28.43
          6 |      6,309       63.09       91.52
          8 |         16        0.16       91.68
          9 |         15        0.15       91.83
         10 |          1        0.01       91.84
         12 |         48        0.48       92.32
         13 |         34        0.34       92.66
         15 |          4        0.04       92.70
         16 |         10        0.10       92.80
         17 |         29        0.29       93.09
         18 |         18        0.18       93.27
         19 |          5        0.05       93.32
         20 |          9        0.09       93.41
         21 |          1        0.01       93.42
         22 |         15        0.15       93.57
         23 |          3        0.03       93.60
         24 |          4        0.04       93.64
         25 |          2        0.02       93.66
         26 |         22        0.22       93.88
         27 |          8        0.08       93.96
         28 |         18        0.18       94.14
         29 |         18        0.18       94.32
         30 |          5        0.05       94.37
         31 |          8        0.08       94.45
         32 |         46        0.46       94.91
         33 |          1        0.01       94.92
         34 |          7        0.07       94.99
         35 |         22        0.22       95.21
         36 |         12        0.12       95.33
         37 |          9        0.09       95.42
         38 |          3        0.03       95.45
         39 |         19        0.19       95.64
         40 |         33        0.33       95.97
         41 |         29        0.29       96.26
         42 |         10        0.10       96.36
         44 |          1        0.01       96.37
         45 |          9        0.09       96.46
         46 |          6        0.06       96.52
         47 |         32        0.32       96.84
         48 |         69        0.69       97.53
         49 |         14        0.14       97.67
         51 |          7        0.07       97.74
         53 |         17        0.17       97.91
         54 |          1        0.01       97.92
         55 |          7        0.07       97.99
         56 |          2        0.02       98.01
         94 |          1        0.01       98.02
         95 |          8        0.08       98.10
         96 |          4        0.04       98.14
         97 |          6        0.06       98.20
         99 |        180        1.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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