Hon GRANT ROBERTSON: I'll give the member this. That's not all about international factors. That's about the fact that the National Party oversaw the sell-off of State houses and managed to build a hundred affordable houses over nine years. It's about supply; houses don't get built right away. On this side of the House, we are now building houses at a faster rate than any Government since the 1970s, trying to make up for the member's party's mistakes.