Heck in 2018 they passed a law that says "Any sex act which does not have explicit consent is rape"[0] including those where there are no threats, coercion or violence of any kind.
I mockingly considered creating a "consent" app which could be signed with BankID.
Sweden is also unique in that it counts every offence as an occurrence of rape- meaning that if you're "raped by your husband 12 times a year" those are 12 separate cases of rape and not 1 (like it would be in the UK).
There is also speculation that in Sweden they take rape reports very seriously, which leads to more people coming forward with cases of rape.
This line of thinking has been discussed before, sadly by the extreme far right.[1]