16
Wow!
Congratulations guys for the dedication you put into this type of research.
One of the problem one must encounter in studying human behavior is to scale the value 'How much?'
Like How much do you love someone else?
In Astrology, we could use the Angular Houses (1,4,7,10) to say Ah! this is more important here! Which is something Michel Gauquelin discovered when he framed the planets around the Houses.
And by itself, we assume that a marriage is a marriage and the longer it lasts the more likely it is important and a result of true love.

Here is a link to researchers who have studied human beings on a large scale.
https://cyclesresearchinstitute.org/cycles-research/

Congratulations Victor and Ganglion!
Ouranos
Blessings!