Homeowners' coverage represented the most volatile major insurance line in the 1992-2005 period, according to an Aon Re Global report published this week.

The study shows that the private passenger auto line experienced the lowest volatility during that period, followed by the auto physical damage, commercial auto and workers' compensation lines.

The 2004-2005 Atlantic hurricane seasons contributed to much of the volatility for homeowners in the 14-year period, which had three times the volatility of commercial auto coverage.

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