Frequencies for first 10,000 rows of rateexpirationdate variable in rate2014 dataset :

       Rate |
 Expiration |
       Date |      Freq.     Percent        Cum.
------------+-----------------------------------
 2014-03-31 |      1,656       16.56       16.56
 2014-06-30 |      1,656       16.56       33.12
 2014-09-30 |      1,656       16.56       49.68
 2014-12-31 |      5,032       50.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 6 Oct 2016