Click to view attachmentThis spreadsheet gives an affordability index for house prices by dividing the annual figure by disposable income. If someone can find the figures for 2006 onwards, I would be grateful as I have spebt too long on the ONS website without success.

Roger, what is the base, ie the 0%, for the 'deviation' figure? Other than that 1981 and 2000 are as close to zero as any of these figures.

Affordability index is the ratio of house prices to disposable income expressed as a percentage. The deviation is the difference of the actual deviation from the average deviation (411%). It is a watered down version of the chi-squared test.
For 1960, divide the house price of £2,301 by the annual disposable income of £808 to give 2.85 or 285%. Subtract the average of 411% to give -126%.
I hope this is a bit clearer.

OK thanks.