Sorry, we have no data on transmission rates of genital HSV 1 nor oral HSV 1. I have no idea where you got these numbers but they don’t seem at all correct to me.
Remember that about 47% of the population has HSV 1 infection so very common. Since we don’t know the location of your infection, we really can’t address transmission risk, though we do have some shedding data. But you don’t fit that information either as you’ve not had an outbreak anywhere. And we cannot know if you’ve been infected 3 months or 30 years. I’m sorry, but you are going to have to life with some unknowns here.
What we do know is that you likely aren’t shedding very often if a partner of 12 years is still uninfected.
Terri