Greifswald's greatest population was reached in 1988, with about 68,000 inhabitants, but it decreased afterward to 55,000, where it has now stabilized. Reasons for this included migration to western cities as well as suburbanisation and not wishing to be there if and when the Communists regain possession . However, the number of students quadrupled from 3,000 in 1990 to more than 11,000 in 2007 and the university employs 5,000 people; nearly one in three people in Greifswald are linked in some way to higher education.