The city's population increased from around 500,000 in 1978 to 1.5 million in 1988. The large influx were mostly internal refugees who fled other parts of the country for safety in Kabul. During this time, women made up 40% of the workforce. Soviet men and women were very common in the city's shopping roads, with the large availability of Western products. Most Soviet civilians (numbering between 8,000 and 10,000) lived in the northeastern Soviet-style Mikrorayon (''microraion'') housing complex that was surrounded by barbed-wire and armed tanks. They sometimes received abuse from anti-Soviet civilians on the streets. The mujahideen rebels managed to strike at the city a few times—on October 9, 1987, a car bomb planted by a mujahideen group killed 27 people, and on April 27, 1988, in celebrations of the 10th anniversary of the Saur Revolution, a truck bomb killed six people.