About 1 year, but it varies.
In one sense, the present Dalai Lama (Tenzin Gyatso, shortened from Jetsun Jamphel Ngawang Lobsang Yeshe Tenzin Gyatso) has been that since his birth on 6 July 1935. However since the present Dalai Lama is the reincarnation of all previous Dalai Lama, he could be said to have been in that position since the First Dalai Lama, Gedun Drupa, who was was born in 1391
Since the early 1400's
it takes about 6 to 18 days
The Panchen Lama
The scientific name for a llama is Lama glama.
Its a lifetime position, it all depends on how long he lasts.
Badr Lama's birth name is Pietro Lama.
Ibrahim Lama's birth name is Abraham Lama.
I want to know how long can be pregnant?
The Dalai Lama has long been considered the secular (nonreligious) leader of Tibet although that has recently changed as the Dalai Lama would like the people of Tibet to have a democratically elected leader. The Dalai Lama is also the religious head of one of the major schools of Tibetan Buddhism called the Gelug, or yellow hat Buddhists.
maybe
A Lama's population is 2,995.