Frequencies for first 10,000 rows of quarterbegindate variable in sdued2006 dat

    Quarter |
 Begin Date |      Freq.     Percent        Cum.
------------+-----------------------------------
 01/01/2006 |      6,678       66.78       66.78
 04/01/2006 |      3,322       33.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Feb 2018