CALGARY — Alberta’s economy grew at the fastest rate among the provinces in 2011, expanding 5.1 per cent compared with an increase of 4.0 per cent in 2010, according to Statistics Canada.

The federal agency reported Monday that exports in the province advanced 9.2 per cent, more than four times their pace in 2010. Consumer spending rose 3.4 per cent, driven by household outlays on durable goods, notably new trucks and used motor vehicles, and services. Business investment was up 7.6 per cent, despite a 5.2 per cent decline in investment in residential housing.

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