Frequencies for first 10,000 rows of quarterbegindate variable in sdued2001 dat

    Quarter |
 Begin Date |      Freq.     Percent        Cum.
------------+-----------------------------------
 01/01/2001 |      6,383       63.83       63.83
 04/01/2001 |      3,617       36.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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