Period-specific information: Year ended March 2007

Period-specific information Tables in this release were produced using the updated industry (ANZSIC06) and product (NA06CC) classifications, which better reflect the modern New Zealand economy. The previous input-output tables were published in 2001 and covered the year ended March 1996, though supply and use tables were also published for the 2003 and 2007 March years. These tables used older industry and product classifications. The 2001 release of input-output tables resulted from an inter-industry study, which combined data from the 1996 Annual Enterprise Survey with very detailed data from censuses of industries carried out in preceding years. The current tables use the 2007 Annual Enterprise Survey as a main data source, but use results from sample surveys of industries, rather than industry censuses, to estimate product data. Previous input-output tables included adjustments for secondary production, which are not included in this release. These adjustments moved secondary output of certain products from some industries to the industries that would normally produce them, to improve the analytical value of the resulting tables. One example was the production by ‘converters’ in the wholesale industry. Converters produce manufactured products by contracting their production to the manufacturing industry. The updated industry classification used in the latest tables has reduced the need for secondary production adjustments, as the converters described above are now included in the manufacturing industry. en-NZ