Trust unit trading is based on daily closing price.

2008 2009 TSX Prices ($) Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 High 27.06       Low 20.00         Close 26.38           Average Daily Volume (000s) 863

2006 2007 TSX Prices ($) Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 High 27.51 28.61 30.74 29.22 23.02 23.86 22.60 21.55 Low 25.09 24.35 25.25 19.20 20.05 20.78 19.00 18.90 Close 27.36 28.00 27.21 22.30 21.25 21.74 21.17 20.40 Average Daily Volume (000s) 546 548 614 1,125 658 599 503 624

2004 2005 TSX Prices ($) Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 High 15.74 15.74 17.38 17.98 20.40 20.30 24.20 27.58 Low 13.50 14.28 15.02 15.61 16.55 16.88 19.94 20.45 Close 15.64 15.35 16.85 17.90 18.15 19.94 24.10 26.49 Average Daily Volume (000s) 502 337 384 456 895 605 599 653

2002 2003 TSX Prices ($) Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 High 13.18 13.44 12.98 12.74 12.34 12.84 13.88 14.80 Low 11.35 11.85 11.05 11.04 10.89 11.29 12.51 13.34 Close 13.14 12.77 12.80 11.90 11.59 12.50 13.55 14.74 Average Daily Volume (000s) 446 252 256 269 313 503 551 395

2000 2001 TSX Prices ($) Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 High 9.20 10.95 12.15 11.70 11.90 13.54 12.74 12.20 Low 8.35 8.65 10.15 10.00 10.95 10.25 10.25 10.35 Close 8.75 10.80 11.30 11.30 11.24 11.55 10.61 12.10 Average Daily Volume (000s) 89 194 141 183 499 447 394 316

1998 1999 TSX Prices ($) Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 High 11.40 10.50 9.25 8.65 7.50 8.25 9.25 9.20 Low 9.40 8.85 7.00 6.10 6.15 7.15 7.85 8.40 Close 10.25 9.25 8.95 6.15 7.30 8.00 9.25 8.75 Average Daily Volume (000s) 35 33 25 35 55 63 101 51

Year on Year Trading History

TSX Prices ($) 1996 1997 1998 1999 2000 2001 2002 2003 High 12.85 13.00 11.40 9.25 12.15 13.54 13.44 14.87 Low 9.90 10.15 6.10 6.15 8.35 10.25 11.04 10.89 Close 12.25 10.45 6.15 8.75 11.30 12.10 11.90 14.74 Average Daily Volume (000s) 98 55 32 68 151 414 305 430 TSX Prices ($) 2004 2005 2006 2007 2008 2009 2010 2011 High 17.98 27.58 30.74 23.86         Low 13.50 16.55 19.20 18.90       Close 17.90 26.49 22.30 20.40         Average Daily Volume (000s) 420 656 706 597