Thank you for your kind words and thoughts.
I found this, too:
Epidemiology of Breast Cancer in Japan (up 65% since 1960s, when the pill was introduced)
Results. The age-adjusted mortality rate has been increasing since the 1960s
(4.1 per 100 000 population in 1950 and 6.6 in 1991, adjusted by the world Population).
The age-adjusted incidence rate has also been rising since 1975. Age-specific rates have been increasing particularly in the age range 4079 years. The multiplicative models disclosed an increasing cohort effect
for the mortality and incidence rates among women born after 1900. Decreasing mortality and incidence rates after menopause were ascribed by the models to strong cohort effects