Bar charts show the share of families in various financial classes from 1979 to 2024. The "rich" category increased from 0% in 1979 to 4% in 2024. The upper-middle class rose to 31% in 2024. The core middle class remained stable around 30%, while lower-middle class families decreased from 24% to 16%, and poor or near-poor families fell from 30% to 19%.