Toronto’s main stock index rose to two-week high on Monday as higher commodity prices lifted materials and energy stocks, while investors awaited a slew of economic data coming in this week from Canada and the United States. At 10:00 a.m. ET (1400 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was up 179.15 points, or 0.9%, at 20,014.9, touching its highest since August 15. Energy stocks added 1.7% as oil prices rose after China halved stamp duty on stock trading in its latest attempt to boost the struggling market. [O/R] China’s finance ministry said in a