This function is used to returns the year as an integer in the range 0100-9999.
See this note.
int Year(double d)
If it is a Julian days date, return the year, 0100 to 9999.
If it is not a Julian days date, return -1.
rr= ; // Should return the year, 2008.
WeekDay, WeekNum, Month, Day, Hour, Minute, Second, Now,