2016
Qatar
$22.3b
Kuwait
$12.5b
Japan
$7.1b
United Arab Emirates
$5.4b
Saudi Arabia
$5.1b
United Kingdom
$4.3b
Iraq
$3.4b
Australia
$2.2b
Norway
$1.8b
Germany
$1.5b
2017
Saudi Arabia
$17.9b
Poland
$11.3b
Japan
$10.7b
Canada
$5.8b
Romania
$5.2b
Bahrain
$4b
Australia
$3.4b
United Kingdom
$3.2b
United Arab Emirates
$2.8b
Greece
$2.5b