Common use of Conversion of Performance Units Clause in Contracts

Conversion of Performance Units. The Performance Units will be converted to a number of Common Shares or the equivalent amount of cash, at the Company's option, relating to the initial 30,000 common shares, based on Annualized Total Shareholder Return (as defined below) from the period beginning January 1, 2002 and ending December 31, 2006 (the "Measurement Period") as indicated below: Annualized Total Common Shares Shareholder Return Awarded ------------------ ------------- Not Applicable 30,000 11% 40,000 12% 50,000 13% 70,000 14% 90,000 15% 110,000 16% 150,000 18% 200,000 Annualized Total Shareholder Return will be measured by assuming a hypothetical investment of $100 in the Common Shares on the first day of the Measurement Period (the "Initial Investment") and calculating the value of that investment as of the last day of the Measurement Period, assuming dividends paid on the Common Shares are reinvested into additional Common Shares (the "Total Return"); the difference between the Total Return and the Initial Investment will be divided by the Initial Investment and the resulting number further divided by the number of years in the Measurement Period to determine the Annualized Total Shareholder Return. For example, if the Total Return is $170 the Annualized Total Shareholder Return is: (170-100)/100=70% 70/5=14%

Conversion of Performance Units. The Performance Units will be converted to a number of Common Shares or the equivalent amount of cash, at the Company's option, relating to the initial 30,000 20,000 common shares, based on Annualized Total Shareholder Return (as defined below) from the period beginning January 1, 2002 and ending December 31, 2006 (the "Measurement Period") as indicated below: Annualized Total Common Shares Shareholder Return Awarded ------------------ ------------- --------------------------------------------------------- Not Applicable 30,000 20,000 11% 40,000 26,667 12% 50,000 33,333 13% 70,000 46,667 14% 90,000 60,000 15% 110,000 73,333 16% 150,000 100,000 18% 200,000 133,333 Annualized Total Shareholder Return will be measured by assuming a hypothetical investment of $100 in the Common Shares on the first day of the Measurement Period (the "Initial Investment") and calculating the value of that investment as of the last day of the Measurement Period, assuming dividends paid on the Common Shares are reinvested into additional Common Shares (the "Total Return"); the difference between the Total Return and the Initial Investment will be divided by the Initial Investment and the resulting number further divided by the number of years in the Measurement Period to determine the Annualized Total Shareholder Return. For example, if the Total Return is $170 the Annualized Total Shareholder Return is: (170-100)/100=70% 70/5=14%

Conversion of Performance Units. The Performance Units will be converted to a number of Common Shares or the equivalent amount of cash, at the Company's option, relating to the initial 30,000 20,000 common shares, based on Annualized Total Shareholder Return (as defined below) from the period beginning January 1, 2002 and ending December 31, 2006 (the "Measurement Period") as indicated below: Annualized Total Common Shares Shareholder Return Awarded ------------------ ------------- -------------------------------------------------------- Not Applicable 30,000 20,000 11% 40,000 26,667 12% 50,000 33,333 13% 70,000 46,667 14% 90,000 60,000 15% 110,000 73,333 16% 150,000 100,000 18% 200,000 133,333 Annualized Total Shareholder Return will be measured by assuming a hypothetical investment of $100 in the Common Shares on the first day of the Measurement Period (the "Initial Investment") and calculating the value of that investment as of the last day of the Measurement Period, assuming dividends paid on the Common Shares are reinvested into additional Common Shares (the "Total Return"); the difference between the Total Return and the Initial Investment will be divided by the Initial Investment and the resulting number further divided by the number of years in the Measurement Period to determine the Annualized Total Shareholder Return. For example, if the Total Return is $170 the Annualized Total Shareholder Return is: (170-100)/100=70% 70/5=14%

Conversion of Performance Units. The Performance Units will be converted to a number of Common Shares or the equivalent amount of cash, at the Company's option, relating to the initial 30,000 common shares, based on Annualized Total Shareholder Return (as defined below) from the period beginning January 1, 2002 2000 and ending December 31, 2006 2004 (the "Measurement Period") as indicated below: Annualized Total Common Shares Shareholder Return Awarded ------------------ ------------- ------- Not Applicable 30,000 11% 40,000 12% 50,000 13% 70,000 14% 90,000 15% 110,000 16% 150,000 18% 200,000 Annualized Total Shareholder Return will be measured by assuming a hypothetical investment of $100 in the Common Shares on the first day of the Measurement Period (the "Initial Investment") and calculating the value of that investment as of the last day of the Measurement Period, assuming dividends paid on the Common Shares are reinvested into additional Common Shares (the "Total Return"); the difference between the Total Return and the Initial Investment will be divided by the Initial Investment and the resulting number further divided by the number of years in the Measurement Period to determine the Annualized Total Shareholder Return. For example, if the Total Return is $170 the Annualized Total Shareholder Return is: (170-100)/100=70% 70/5=14%