A caveat for the rest of the world:

> our finding showed a significant increase in breast cancer mortality rate in the world during the past 25 years ... Statistical analysis showed a significant increase for breast cancer mortality rate in all super regions, except for High-income super region. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6745227/

and for women under 40:

> Female breast cancer mortality rates have stopped declining in women younger than 40 years, ending a trend that existed from 1987 to 2010. Conversely, mortality rates have continued to decline in women aged 40–79 years. https://pubs.rsna.org/doi/full/10.1148/radiol.2021203476