How some of the key countries compare

Key

Qatar

Saudi Arabia

UAE

Iran

Population,

millions

Per capita GDP,

$ thousand

31.5

20.5

74.8

2.24

9.2

5.4

79.1

40.4

Exports of oil, gas

and related products

$bn in 2016

Active military

personnel,

thousands

235

48.2

136.4

12

65

545

40.5

50.8

Key

Qatar

Saudi Arabia

UAE

Iran

Population,

millions

Per capita GDP,

$ thousand

Exports of oil, gas

and related products

$bn in 2016

Active military

personnel,

thousands

235

31.5

48.2

20.5

136.4

74.8

2.24

12

9.2

65

5.4

79.1

40.4

545

40.5

50.8