They don't face the exact same pressure [1]. Men in this age group worked outside the home, a lot of blue collar jobs. Jobs they cannot perform anymore due to their age. Women more often worked in caregiver roles (more traditionally female occupations like nurses, teachers, etc.) or in the home. The men need to pivot to find fulfillment/satisfaction in life. The women just change who they're caring for (grand children and great grandchildren instead of their own children, or students, or patients).
I suspect that it's significant that the number of suicides over age 75 for men has dropped in those 15 years. Either reflecting a better quality of life, or a change how men are able to find satisfaction post-career.
[1] Ok. I'm making assumptions based on "traditional" gender roles here. But given the age group in question, I feel its justified. The division between male and female roles is far more present in those over 75 than the current working generations. This will change as the population ages, and be less applicable in 20-40 more years. But it's still applicable to this group today.