Herfindahl Indexes, Canada and Provinces, 2004-2009 [Excel]

Concentration statistics summarize the size distribution of units within an industry. Numerous measures have been used for various purposes. These tables present data for the two most common: concentration ratios (CR) and Herfindahl indexes (HI). The CR and HI emphasize different aspects of the size distribution. The CR measures the importance of the largest enterprises directly while the Herfindahl index takes the entire size distribution of enterprises into account. These statistics are classified by North American Industry Classification System (NAICS) and the Standard Geographical Classification (SGC). The Annual Survey of Manufactures and Logging collects information on over 250 different industries. Beginning in 2004, the Annual Survey of Manufactures and Logging (ASML) replaces the Annual Survey of Manufactures and the Annual Survey of Forestry. While the ASML covers the same target population as its predecessors, this new survey ushers in a number of conceptual and methodological changes intended to reduce response burden, enhance data quality and streamline survey operations. Two changes have the greatest impact on the comparability of the principal statistics series for manufacturing (published in CANSIM tables 301-0003 and 301-0006) used to compile this product: some redefinition of the survey content and a change in the coverage for published statistics. Beginning with reference year 2004, the principal statistics published for manufacturing cover the activities of all businesses classified as manufacturers in Canada. These data series are not strictly comparable with manufacturing principal statistics previously published which covered the activities of businesses with annual sales greater than or equal to $30,000. This dataset contains 6 separate tables , one for each year.