According to that 17% of boomers+ are dependent on their parents. Just looking at boomers, that is around 70 on average. How many people that age even have parents still alive, let alone financially depend on them?
I'd speculate (based on a study I've recently been made aware of) about 17%.
The youngest boomers are 62 this year. Not many would have living parents. Are you referring to inheritance they may have gotten?