Frequencies for first 10,000 rows of quarterbegindate variable in sdued2002 dat

    Quarter |
 Begin Date |      Freq.     Percent        Cum.
------------+-----------------------------------
 01/01/2002 |      6,561       65.61       65.61
 04/01/2002 |      3,439       34.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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