小中不上进，生活水准会不如爹妈，美国家庭收入in today‘s dollar: 1981年$76K，2021年$71K

In 1980, American families had a median income at $75,672 in today’s currency, according to the U.S. Census Bureau. Four decades on, that average has actually dropped to about $70,784 as of 2021.

https://finance.yahoo.com/news/100k-come-life-still-hard-140000314.html