Does anyone know how was Parramatta like 20 or 30 years ago?

The site says 69% dwelling in Parramatta are flat. Was Parramatta built from scratch? Or did people demolish the old houses and built the new high rise built there?

Type of Dwelling
Flat 69%
Separate house 19%
Semi/Terrace 6%
Parramatta today is very different place to 20-30 years ago.

Parramatta is a city which 80% would be made up of commercial and retail buildings, of the 20% left - 70% would be units (many high rise) and 30% houses, townhouses etc.

These figures are estimates and do not include the surrounding suburbs (i.e. Parramatta LGA)