The offset for 1983 is 0. It The offset for 1983 is 0. It's an even numbered decade (8) so the offsets are 1 from 1984 to 1987 and 2 from 1988 to 1989. Reply
The offset for 1983 is 0. It's an even numbered decade (8) so the offsets are 1 from 1984 to 1987 and 2 from 1988 to 1989.