Anytime during 2013, change the year back to a year that matches each day of the month & each day of the week for the entire year.
As an example, if the current year was a leap year, the year to choose to change back to must also be a leap year.
If not, reports will be skewed, CDR will be skewed, and the system will be unable to "speak" the year 2013 when accessing a voice message that was sent in 2013. The only time when an Aria speaks the year is when the year of the message is not the same as the current year in the VM system.