NA = Not Available

1) During the second quarter 2005, the Company began using trailing 12-month net income and average shareholders' equity to calculate its return on average shareholders' equity, rather than annualized net income through the period; prior interim periods have been restated.

2) Represents Progressive's Personal Lines businesses as a percent of the U.S. personal auto insurance market.

3) Represents U.S. personal auto insurance market net premiums written as reported by A.M. Best Company, Inc.

4) Represents average annual compounded rate of increase (decrease) and assumes dividend reinvestment.

All share and per share amounts were adjusted for the April 22, 2002, 3-for-1 stock split.

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