Gross domestic product by industry is the value added by labor and capital in transforming inputs purchased from other producers into that industry's output. Monthly GDP consists of chained volume estimates with 2007 as the reference year. This means that the data for each industry and each aggregate are obtained from a chained volume index multiplied by the industry's value added in 2007.
Instead of producing an advanced quarterly GDP figure and revising it the following two months, Statistics Canada releases monthly estimates of real GDP at Basic Prices. This release breaks down real output by seven goods-producing industries and twelve service-producing industries, and includes special aggregations such as business sector, non-business sector, and industrial production.
The sources of data used for monthly and quarterly estimates often differ and leads to very different estimates for certain items, such as price deflators. As a result, the monthly figures are not perfectly correlated with the quarterly numbers. However, the monthly data do give some idea of where the quarter is headed and especially in an uncertain environment, they are closely watched. While industrial production is closely watched in the U.S., it is not in Canada especially since the economy has become increasingly dominated by services. However, the goods sector is more vulnerable to wide swings in output compared to services, and exports remain dominated by industrial output.
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