Gee, this is frustrating, i'm not advocating 50% falls but nor do they happen overnight, the US is now over 5 years (nearly 6) into its meltdown and prices are down around 30% (must be closer to 50% in real terms), property slumps/crashes happen very slowly.
The point is, at this point, we're looking at a 20% or so drop in nominal terms in 4 years, that's huge, so you would hope the data would be improving if you wanted prices to stay up.
