The education sector is expected to suffer a US$5 billion loss according to an early government estimate,[362][363] including costs due to "tuition fee refunds, free deferral of study, realignment of teaching calendars and student accommodation costs."[364] The taxpayer is likely to be required to cover the shortfall in education budgets.[365] An estimated 100,000 students were not able to enroll at the start of the semester.[366] Nearly two-thirds of Chinese students were forced to remain overseas due to visa restrictions on travellers from mainland China.[367] Salvatore Babones, associate professor at the University of Sydney, stated that "Australia will remain an attractive study destination for Chinese students, but it may take several years for Chinese student numbers to recover".[364]