I very much doubt that wages are going to go back to normal within a single year.
Many industries have been ruined.
Cinemas, airline industry, hotels, indoor entertainment like comedy clubs, theatres, etc. Nightclubs are ruined.
A lot of independent cafes that relied on offices and footfall.
It would be mental for them to bounce back within a year. It will take many years to go back to the way things were and only if there is a vaccine that works long term.
The high street was already dying this has pretty put another nail in that coffin.
I'd bet good money it's never going to be 18%
Unemployment doesn't affect average earnings. It's about earnings of people in work.