I propose to take Questions Nos. 3 and 4 together.
When the Single Market was completed in January 1993, customs declarations were no longer required for the movement of goods within the EU. Since these declarations were the source of the intra-EU trade statistics, a new system was needed to collect the data. This new survey system called Intrastat was introduced in all EU countries in January 1993. It involves the monthly collection of statistical returns from about 6,900 of the largest traders.
Before 1993 trade statistics were more timely than most other economic statistics because traders had to complete customs documentation at the time of import-export in order to ensure the speedy movement of goods. As a result it was possible to produce detailed monthly statistics with a delay of no more than two months. The Intrastat data collection system has lost this advantage, since it is based on summary returns submitted after the reference month and is also subject to the non-response and timeliness difficulties that are common to all direct statistical inquiries.
As in all other EU states there were considerable problems in introducing the new system. The average timelag for 1993, the first year of the new system, was more than seven months. Much progress has, however, been made in improving the timeliness. The current timelag is three and a half months for the global figures — total imports and total exports — and four and a half months for the detailed figures. Further improvements are expected over the coming year, although it is unlikely that the former performance will be matched unless traders submit their monthly returns more quickly. Statistics on our trade with non-EU countries, which are still based on custom documentation, are published two months after the end of the reference period.
As regards the quality of the trade data, the CSO is happy that the overall quality is good. In 1994 after one full year's operation of the new system, the CSO conducted a comprehensive analysis of the quality of the results. This showed that the quality at the overall level was not affected to any significant extent by the introduction of Intrastat.
The quality of the detailed statistics was, however, affected because of the need to estimate figures for the many small traders who are below the survey threshold, and for the larger traders who did not respond to the survey. Every effort is being made to minimise the adverse impact on quality of these factors. The Revenue Commissioners, who collect the data, have adopted a range of measures to improve response while the CSO has improved its methodology of estimating for missing data.
Despite the difficulties I mentioned, I am satisfied that the new system provides reliable and comprehensive statistics on our international trade which, with the improving timeliness, meets the needs of most users.