CHANGES IN THIS AND FORTHCOMING ISSUES


CHANGES IN THIS ISSUE

Improvement to the methodology of compiling chain volume measures and implicit price deflators on goods credits and debits

An improvement to the methodology of compiling the chain volume measures and implicit price deflators for goods in seasonally adjusted terms has been introduced to the following components from September 2005 onwards:

• Goods credits (exports)
  • metal ores and minerals
  • coal, coke and briquettes
  • other mineral fuels
• Goods debits (imports)
  • fuels and lubricants.

The change has caused revisions to the above series.

See Explanatory Notes paragraphs 11 and 12 for details.

In addition, the following tables have been revised to correct a compilation error:

• 107 Merchandise imports by SITC division and section on a Recorded trade basis, chain volume measures
• 108 Merchandise imports by SITC division and section on a Recorded trade basis, implicit price deflators.

CHANGES IN FORTHCOMING ISSUES

Annual seasonal re-analysis

The seasonally adjusted and trend estimates of goods and services will be revised in the September quarter 2011 issue as part of the annual re-analysis. This re-analysis reviews the seasonal and trading day factors in more detail than possible in the quarterly processing cycle and assesses the appropriateness of any prior corrections.


New base year and re-referencing of chain volume estimates and implicit price deflators

A new base year 2009-10 will be introduced into chain volume estimates and implicit price deflators in the September quarter 2011 issue. In addition, the chain volume estimates and implicit price deflators will be re-referenced to 2009-10.