On 8 September 1969, banknotes of 50 cents (5 shillings), $1 (10 shillings), $2 (£1), and $10 (£5) were introduced. The $5 note was introduced on 20 October 1970, followed by the $20 in June 1976, when the 50 cent note was replaced by a coin. $100 notes were added on 2 December 1986, followed by $50 notes on 27 July 1988. The $2 note was dropped in 1989, whilst the $1 note was replaced by a coin in 1990. In 1994, coins replaced the $5 notes and $500 notes were introduced. In 1999, $10 coins replaced notes, whilst, in 2000, $20 coins replaced the notes and $1000 notes were introduced.

Source: Wikipedia