Dec 1 (Reuters) - Canada’s main stock index opened higher on Tuesday after data showed the economy grew at a record pace in the third quarter and as drugmakers sought swift approval of their COVID-19 vaccines. At 9:32 a.m. ET (14:32 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was up 277.2 points, or 1.61%, at 17,467.45. Reporting by Devik Jain in Bengaluru; Editing by Aditya Soni Our Standards: The Thomson Reuters Trust Principles.