Miss Pearman's body was found by a lorry driver at about 3.50am. She was last seen alive in Rouen Road, Norwich, at 1.15am the same day.
At the time of the initial investigation, DNA samples were taken and loaded onto the national database but no match has yet been found.
Over the years, more than 4,000 people have been interviewed and hundreds of men provided DNA samples for testing.
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Tributes have been pouring in for a woman who died in a house fire in West Norfolk.
Any residual evening showers should die out. Clear spells at first, and turning chilly in places. Lows of 9 deg C (48 deg F).
A woman has died in a house fire in Heacham in West Norfolk.