In 2011, IDF soldier Gilad Shalit was released in a hostage-prisoner swap after spending five years in captivity. That means that in the almost 20 years since Shalit was captured in June 2006, there has only been a three-year period without any Israeli hostages being held in the Gaza Strip. https://allisraelnews.com/ran-gvili-found-all-israeli-hostages-have-returned-home-from-hamas-captivity-in-gaza-after-842-days