continuous population decline, which was accompanied by urban decay. By 1981, Tel Aviv had entered not just natural population decline, but an absolute population decline as well. In the late 1980s the city had an aging population of 317,000. Construction activity had moved away from the inner ring of Tel Aviv, and had moved to its outer perimeter and adjoining cities. A mass out-migration of residents from Tel Aviv, to adjoining cities like Petah Tikva and Rehovot, where better housing conditions were available, was underway by the beginning of the 1970s, and only accelerated by the Yom Kippur War. Cramped housing conditions and high property prices pushed families out of Tel Aviv and deterred young people from moving in. From the beginning of 1970s, the common image of Tel Aviv became that of a decaying city, as Tel Aviv's population fell 20%. In the 1970s, the apparent sense of Tel Aviv's urban decline became a theme in the work of novelists such as Yaakov Shabtai, in works describing the city such as Sof Davar (The End of Things) and Zikhron Devarim (The Memory of Things). A symptomatic article of 1980 asked "Is Tel Aviv Dying?" and portrayed what it saw as the city's existential problems: "Residents leaving the city, businesses penetrating into residential areas, economic and social gaps, deteriorating neighbourhoods, contaminated air – Is the First Hebrew City destined for a slow death? Will it become a ghost town?". However, others saw this as a transitional period. By the late 1980s, attitudes to the city's future had become markedly more optimistic. It had also become a center of nightlife and discotheques for Israelis who lived in the suburbs and adjoining cities. By 1989, Tel Aviv had acquired the nickname "Nonstop City", as a reflection of the growing recognition of its nightlife and 24/7 culture, and "Nonstop City" had to some extent replaced the former moniker of "First Hebrew City". The largest project built in this era was the Dizengoff Center, Israel's first shopping mall, which was completed in 1983. Other notable projects included the construction of Marganit Tower in 1987, the opening of the Suzanne Dellal Center for Dance and Theater in 1989, and the Tel Aviv Cinematheque (opened in 1973 and located to the current building in 1989). In the early 1980s, 13 embassies in Jerusalem moved to Tel Aviv as part of the UN's measures responding to Israel's