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

    Date of |
Last crash, |
 suspension |
         or |
 conviction |
    (Month) |      Freq.     Percent        Cum.
------------+-----------------------------------
         -1 |         15        0.15        0.15
          0 |      5,586       55.86       56.01
          1 |        301        3.01       59.02
          2 |        299        2.99       62.01
          3 |        343        3.43       65.44
          4 |        352        3.52       68.96
          5 |        303        3.03       71.99
          6 |        333        3.33       75.32
          7 |        318        3.18       78.50
          8 |        345        3.45       81.95
          9 |        333        3.33       85.28
         10 |        364        3.64       88.92
         11 |        329        3.29       92.21
         12 |        345        3.45       95.66
         99 |        387        3.87       99.53
          . |         47        0.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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