Life Expectancy differs from human years lived, no? Got any numbers?

It seems difficult to believe all the medical treatment advances and insane amounts of money spent are having zero effect on postponing date of death (Or even the date of loss of ability to live independently including death).

Of 100,000 people born in a nation 80 years prior, how many still alive and living independently in that nation. Compare with the same metric in 2004. This is to net out immigration, which can be considered separately.

You don’t necessarily have to use “alive” as the metric though.

Do we know if older people are living unassisted in their homes longer? That’s all we really care about in this context. Or not even unassisted, but family members moving in and taking care too.