Length of real estate bear market

There was an interesting table on the FT last Saturday that reported the length and extension of house prices drop (the bear market) in 15 economies since 1970 (mainly Europe, USA + Japan, Korean, New Zealand and Canada).

On Average, the bear market has lasted 6+ years, and the prices dropped between 16% (Canada) and 50% (Netherlands). UK had 2 bear markets, lasting only 3 / 4 years each, with prices dropping 26% and 34%.

If history teaches anything, and considering the highly inflated prices of the last boom cycle, are we set for prices dropping between 30% and 40% and for the bear market lasting up to 5 years?