What happened in 2020?

The results are clear.

Here are the sources, go and read:

https://phinancetechnologies.com/HumanityProjects/UK%20Cause%20of%20death%20Project%20-%20Cardiovascular%20Deaths%2015-44%20-%20Individual%20Causes.htm

https://phinancetechnologies.com/HumanityProjects/UK%20Cause%20of%20Death%20Project%20-%20Cardiovascular%20Deaths%2015-44.htm