Do you have data for this? I don't, but anecdotally, I grew up with parents with around this income who openly discussed wages. While they might be outliers (both economists), many of my friends who grew up with similar family incomes have also mentioned their families discussing salary.
That's how my parents were. When I was 18 or so my father walked me through his income and all his retirement accounts, wills, life insurance policies, etc. He wanted me to understand at least the basics of his finances in case anything happened to himself and my mother.
I knew where all the paperwork was kept in the house and had access to the safety deposit box where he kept copies.
