WESTERN Australia has recorded a $28.3 billion trade surplus for 2005, up from $22.2 billion in 2004, against an overall national result of a deficit of $17.1 billion.“WA’s exports share over 2005 stands at a record 31.3 per cent of the national total, up from a share of 29.7 per cent during 2004,” Treasurer Eric Ripper said.“In annual average terms, the total nominal value of WA exports also strengthened, rising by 24.4 per cent over 2005 to a record $43.5 billion.”Mr Ripper warned that Canberra’s continued neglect of WA’s infrastructure needs was a threat to longer-term growth. “If WA is to continue punching above its weight in the export arena, then it needs adequate infrastructure funding from the Howard government,” he said.