Owning your own home before being 30 has literally halved, in 20/30 years, the data is there. I would say 60% of under 30s owning a house was a large number, particularly when your consider less than 80% ever own their own house. :shrug:
That dropping by 50% is very significant IMO.
This report:
https://www.google.com/url?sa=t&source=web&rct=j&url=https://ifs.org.uk/uploads/publications/bns/BN224.pdf&ved=2ahUKEwj8gfeNm_j1AhW3QEEAHdV4Ba8QFnoECD4QAQ&usg=AOvVaw2wxH66rjo8AX_eGJfyKrr1
Suggests it has changed quite significantly from ~60% if you were born before 1970, to around...