Frequencies for first 10,000 rows of quarterbegindate variable in sdued2012 dat

    Quarter |
 Begin Date |      Freq.     Percent        Cum.
------------+-----------------------------------
 01/01/2012 |      8,066       80.66       80.66
 04/01/2012 |      1,934       19.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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