The number of North Sea and West of Scotland fixed quota units in groups (producer organisations, the Lunar group, and Scottish-based non-sector vessels, but excluding the under 10 metre group), administered by the Rural Affairs department was as follows: At 1st January 20001999Attached to "dummy vessels" (millions)0.4500.445Attached to licences (millions)4.6034.174Since three new quota stocks were introduced this year, the figures for the two years are not directly comparable.Information on ownership of units attached to dummy vessels is held by producer organisations and is not available centrally.