1984
according to IMDb though I suppose that could have been 1985 before it was shown here
( Jadeviper was still alive on, Wed 6 Jul 2005, 16:32, archived)

Nah, I was definitely old enough to see it and appreciate it,
so it must have been shown again a few years after it came out.
( Mr. Tea 'ulmmm'/'mmneurgh', Wed 6 Jul 2005, 16:38, archived)