Depends on the definition of a close friend. None I see weekly but that's due to circumstances. Two groups I meet up with several times a year.
Three friends I went to school with, one of whom is in one of the groups above and is my closest friend. Of the other two, I am closer to one than the other.
No one left from university - only keep up with some of them via FB or Christmas cards.
About 4 others I meet with one to one several times a year.
And some whom I see only every few years or haven't seen for a long time as they live far away.
I'd like more local friends - they either moved away or I don't see them now as our kids are no longer in school. But I'm not short of company (DH, family, work colleagues)
But when you get older like me and have years and years of knowing people, you just take up where you left off when you meet. So seeing someone a few times a year with the odd WhatsApp exchange in between doesn't make them seem any less close.
If I was in a Thai jail situation, I wouldn't call any of them except my closest friend, and her only during waking hours. I'd call, in order, my DH, my dad, my brother, my sister/ daughters / sister in law.