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 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 20,000 11% 26,667 12% 33,333 13% 46,667 14% 60,000 15% 73,333 16% 100,000 18% 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 20,000 common shares, based on Annualized Total Shareholder Return (as defined below) from the period beginning January 1, 2002 1996 and ending December 31, 2006 2000 (the "Measurement Period") as indicated below: Annualized Total Common Shares Shareholder Return Awarded -------------------------------------------------------- Not Applicable 20,000 ------------------ -------------- 10% 15,000 11% 26,667 20,000 12% 33,333 25,000 13% 46,667 35,000 14% 60,000 45,000 15% 73,333 55,000 16% 100,000 75,000 18% 133,333 100,000 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 (five) 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 20,000 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 20,000 30,000 11% 26,667 40,000 12% 33,333 50,000 13% 46,667 70,000 14% 60,000 90,000 15% 73,333 110,000 16% 100,000 150,000 18% 133,333 200,000 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 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 20,000 11% 26,667 12% 33,333 13% 46,667 14% 60,000 15% 73,333 16% 100,000 18% 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 20,000 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 20,000 30,000 11% 26,667 40,000 12% 33,333 50,000 13% 46,667 70,000 14% 60,000 90,000 15% 73,333 110,000 16% 100,000 150,000 18% 133,333 200,000 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%