APPENDIX 1 PRODUCT SUPPLY AND USE GRAPHS
INTRODUCTION
The following graphs show the supply and use of the 33 product groups identified in the QSU model as at the time of the compilation of the March 2005 quarterly national accounts. The product groups differ in complexity and the problems they present for data editing. In general, goods present more complex problems than services because they can be held as inventories and are subject to trade and transport margins. Data on inventories are not readily available at the product level, and margins must be estimated using reference year relationships and the aggregate output of the trade and transport industries.
The complexity of a product group in terms of the amount of data used to compile supply and use series does not always indicate the difficulty of balancing supply and use for that group. The quality of the data available quarterly is also a factor. The supply and use of complex product groups can be closely correlated if good quality data are available for all components, while relatively simple product groups can be difficult to balance if reliable data are not available.
The relative significance of each product group in terms of its contribution to total supply is shown as a footnote to each graph. The percentage of total supply of each product group in the reference year gives an indication of the contribution of that product group to GDP. The contribution to GVA would be preferred, but it is only available for industries, not products. It should be noted that different scales have been used on the graphs, so care should be taken in assessing the significance of supply and use discrepancies for the whole economy.
GRAPHS
Agricultural products
Forestry & fishing
Mining products
Services to mining
Manufactured food, beverages & tobacco
Textiles, clothing & footwear
Wood & paper products
Printing & publishing products
Petroleum, coal & chemical products
Non-metallic mineral products
Metal products
Machinery & equipment
Other manufactured products
Electricity
Gas
Water supply, sewerage & drainage services
Construction
Other retail & wholesale services
Accommodation, cafes & restaurants
Road transport
Air & space transport
Water transport
Rail, pipeline & other transport
Transport services & storage
Communication services
Financial & insurance services
Property & business services
Government administration & defence
Education
Health & community services
Cultural & recreational services
Personal & other services
Ownership of dwellings
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