Question: How many passengers did the only other base for Ishtar Airlines, other than Baghdad International Airport, serve in 2016?

Context paragraphs:
Baghdad International Airport: Baghdad International Airport (IATA: BGW, ICAO: ORBI) , previously "Saddam International Airport" (IATA: SDA, ICAO: ORBS) (Arabic: مطار بغداد الدولي‎ ‎ ), is Iraq's largest international airport, located in a suburb about 16 km west of downtown Baghdad in the Baghdad Governorate.  It is the home base for Iraq's national airline, Iraqi Airways.

Mansour district: Al Mansour district (Arabic: المنصور، بغداد‎ ‎ ) is one of the nine administrative districts in Baghdad, Iraq.  It is in western Baghdad and is bounded on the east by Karkh district in central Baghdad, to the north by Kadhimiya, to the west by Baghdad International Airport, and to the south by Baghdad Airport Road, on the other side of which is Al Rashid district.  Al Mansour is named after Abu Ja'far al-Mansur, the second Abbasid Caliph and founder of Baghdad.  As of 2015, Mansour district is one of the most heavily Sunni populated districts of Baghdad mostly due to an influx of internally displaced people from the overwhelmingly Sunni populated Anbar province due to the Iraqi Civil War.

Ishtar Airlines: Ishtar Airlines (Arabic: عشتار ايرلاينز‎ ‎ ) was an airline based in Dubai, United Arab Emirates, although it was a private Iraqi airline operating scheduled passenger services, its main bases were its only destinations, Baghdad International Airport and Dubai International Airport.

Operation Able Warrior: Operation Able Warrior was conducted by Task Force Baghdad soldiers in the early-morning hours of 4 August 2005 to defeat terror cells operating west of the Baghdad International Airport.  The mission of Operation Able Warrior was to disrupt car-bombing cells and those that place roadside bomb, and prevent them from planning, preparing and carrying out terrorist attacks in the area.  The purpose of the mission was to aid the Iraqi Security Forces in the area in their day-to-day operations, and to secure the perimeter of the Baghdad International Airport.

Baghdad Airport Road: The Baghdad Airport Road is a 12-kilometer (7.5 mi) stretch of highway in Baghdad, Iraq linking the Green Zone, a heavily fortified area at the center of Baghdad, to Baghdad International Airport (BIAP).  It also links different parts of Baghdad to the Airport and connects neighboring areas to each other.  It became prominent after the 2003 invasion of Iraq following its capture by the Coalition Forces.  Although it was commonly referred to by the military Main Supply Route (MSR) designation "Route Irish", the route from the International Zone to the airport stretches over two MSRs: Route Aeros, the section leading into and out of the International Zone, and Route Irish, which stretches east from the airport, then turns south (past the junction with Route Aeros) to a junction with Highway 1 (MSR Tampa).

Baghdad International School: Baghdad International School (BIS) was an international school near Baghdad International Airport in Baghdad, Iraq.  It followed the British curriculum and used English as the medium of instruction.  It was governed by a committee made of nine members, five appointed by the UN Development Programme and four parents.  It served Kindergarten/nursery through the final year of high school/sixth-form (K-12).

Dubai International Airport: Dubai International Airport (IATA: DXB, ICAO: OMDB) (Arabic: مطار دبي الدولي‎ ‎ ) is the primary international airport serving Dubai, United Arab Emirates and is the world's busiest airport by international passenger traffic.  It is also the 3rd busiest airport in the world by passenger traffic, the 6th busiest cargo airport in world, the busiest airport for Airbus A380 and Boeing 777 movements, and the busiest airport in the world operating with only two runways.  In 2016, DXB handled 83.6 million passengers, 2.59 million tonnes of cargo and registered 418,220 aircraft movements.

Al-Naser Airlines: Al-Naser Airlines is a charter airline based in Karrada, Baghdad, Iraq.  Its main base is Baghdad International Airport.

Fly Baghdad: Fly Baghdad (Arabic: فلاي بغداد‎ ‎ ) is a private Iraqi airline, headquartered in Baghdad, Iraq.  Fly Baghdad operates currently schedule domestic flights only.  Its base is at Baghdad International Airport.  The airline has restarted its operations on 14 February 2017.

Iraqi Airways: Iraqi Airways Company, operating as Iraqi Airways (Arabic: الخطوط الجوية العراقية‎ ‎ "Al-Khuṭūṭ al-Jawwiyyah al-`Irāqiyyah"), is the national carrier of Iraq, headquartered on the grounds of Baghdad International Airport in Baghdad.  It is the oldest airline in the Middle East.  Iraqi Airways operates domestic and regional service.  Its main base is Baghdad International Airport.

Supporting paragraphs: Ishtar Airlines Dubai International Airport
Answer: 83.6 million