Complex sentence: This changed in 1982 when a Wollongong club and a Canberra based team was allowed and in 1988 until 1998, teams from outside New South Wales (NSW) began to enter the premiership.
Split into simpler sentences: This changed in 1982 when a Wollongong club and a Canberra based team joined in 1988. In 1998 teams from outside New South Wales began to enter the premiership.