Data quality, concepts and methodology: Changes affecting historical comparability of data
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Listed below are summaries of the main changes in coverage, classification, concepts and methods since reference year 1999 which may affect the comparability of the Corporations Returns Act data over time. The year associated with each change indicates the reference year of data to which the change was first applied.
2011 Introduction of NAICS 2012
Beginning with reference year 2011, statistics by industry have been compiled based on the 2012 North American Industry Classification System (NAICS). The data are published at an aggregate level such that there is no effect on historical comparability.
2007 Change in definition of European Union
Beginning with reference year 2007, statistics for the European Union (EU) cover 27 countries, reflecting the addition of Bulgaria and Romania. Data for these countries were previously included in estimates for the Other Foreign country of control category.
2006 Introduction of NAICS 2007
Beginning with reference year 2006, statistics by industry have been compiled based on the 2007 North American Industry Classification System (NAICS). Data for reference years 1999 to 2005 were revised in order to reflect this classification system.
2006 Refinement of Country of Control Concept
For reference year 2006, the country of control was assigned to enterprises based on the country of residence of their ultimate, controlling parent, rather than based on the country which has majority ownership of the enterprise's voting shares. When the preliminary 2006 data were released, data for reference years 1999 to 2005 were revised to reflect the new country of control method, technical improvements and late returns.
At the Total All industries level, the use of the new country of control method for the 1999 to 2005 data resulted in a small increase in the level of Canadian-controlled assets when compared with statistics for the same years based on the previous method. On average, over the 1999 to 2005 period, Canadian-controlled assets were 1.9% higher under the new method compared with the old method.
2004 Change in definition of European Union
Beginning with reference year 2004, statistics for the European Union (EU) cover 25 countries, reflecting the addition of the following ten countries to the EU: Czech Republic, Cyprus, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia and Slovenia. Prior to reference year 2004, the EU included the following countries: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Italy, Ireland, Luxembourg, Netherlands, Portugal, Spain, Sweden and the United Kingdom.
2003 Introduction of NAICS 2002
Beginning with reference year 2003, statistics by industry were compiled based on the 2002 North American Classification System (NAICS). Data for reference years 1999 to 2002 were revised in order to reflect this classification system.
1999 Introduction of NAICS 1997
Starting with reference year 1999, statistics by industry were compiled based on the 1997 North American Classification System (NAICS 1997). For reference periods 1988 to 1998 inclusive, the statistics were compiled based on the Standard Industrial Classification for companies and Enterprises (SIC-C 1980). Prior to 1988, the 1960 Standard Industrial Classification for Establishments was used.
1997 Change to Corporations Returns Act
The Corporations Returns Act was formerly known as the Corporations and Labour Unions Returns Act (CALURA). The original CALURA was first introduced in 1962 and Statistics Canada has prepared annual reports to Parliament since that time. Parliament officially amended the Act as of January 1999, deleting the requirement of labour unions to report under the Act.
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