TORONTO - JUNE 29: A construction site on June 29, 2012 in Toronto. Toronto's boom has helped lead to development of more highrise buildings in 2011 than any other city in North America.
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TORONTO - JUNE 29: A construction site on June 29, 2012 in Toronto. Toronto's boom has helped lead to development of more highrise buildings in 2011 than any other city in North America.