Complex sentence: According to the John Jay report, one-third of the accusations were made in the years 2002 and 2003 and another third of the allegations were reported between 1993 and 2001.
Split into simpler sentences: According to the John Jay report, one-third of the accusations were made in the years 2002 and 2003. Another third of the allegations were reported between 1993 and 2001.