Frequencies for first 10,000 rows of rateeffectivedate variable in rate2017 dataset :

       Rate |
  Effective |
       Date |      Freq.     Percent        Cum.
------------+-----------------------------------
 2017-01-01 |      3,776       37.76       37.76
 2017-04-01 |      2,074       20.74       58.50
 2017-07-01 |      2,075       20.75       79.25
 2017-10-01 |      2,075       20.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017