Good question, don't know the answer.
The latest 2017 Yearbook has hardly any mention of Gilead or missionaries. The Yearbooks used to be full of it.
What year was Gilead downgraded?
2010 is the earliest Yearbook in PDF I can find on the site. There was much more about Gilead and missionaries back then.
2010 Yearbook
Gilead - 13
Missionary - 34
Missionaries - 72
2017 Yearbook
Gilead - 1
Missionary - 1
Missionaries - 2
In fact the single 2017 use of "Gilead" is for a "Gilead extension programme" in Germany. And one of the instances of "missionaries" is in the regular financial statement. So in 2017 Gilead and missionaries are practically extinct.