There wasn't a World Cup in 1999, nor did Australia not win during a world cup since then. Australia didn't qualify in 2002, went out in the 2nd round in 2006 (They won 3-1 against Japan, then lost 2-0 against Brazil, then drew 2-2 with Croatia, then lost 1-0 against Italy) and went out in the group stage in 2010 (They lost 4-0 against Germany, then drew 1-1 with Ghana, then won 2-1 against Serbia).