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

 Crash Date |
    (MONTH) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        899        8.99        8.99
          2 |        934        9.34       18.33
          3 |        962        9.62       27.95
          4 |        801        8.01       35.96
          5 |        952        9.52       45.48
          6 |      1,040       10.40       55.88
          7 |      1,100       11.00       66.88
          8 |        957        9.57       76.45
          9 |        831        8.31       84.76
         10 |        699        6.99       91.75
         11 |        401        4.01       95.76
         12 |        424        4.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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