Interestingly those numbers are consistent with what I cited.
People in the top 20% have been happy and remain happy. They have needs met, have most wants met, have enough status and likely haven’t lost much status. They are the most commonly married too. Felt and feel secure.
The lowest 20% has the least happiness. Not all needs met, low status, possibly dropped status, and least likely married.
The middle? That includes the $75 to $100K group. Used to be happier. Used to have more community connections, used to be more people who moved up into their current status than who dropped down into it.
And again these figures are mostly gender agnostic. If you are a person who has become more well educated and more well off, more status, than your parents were in the overall hierarchy then you are likely happier than you are if your place in the hierarchy, your status, has dropped. More women are moving on up than men. The women left behind are just as likely to be unhappy as men are. Those who have lost status are just as likely miserable no matter what gender.