|Total military purchases reached $1,676 billion in 2015, or nearly $1.7 trillion, consuming some 2.3 percent of global gross domestic product. The United States dominates global spending on defense, with a budget almost three times that of China.
The US spends around $569bn a year - the majority of which goes on operations, maintenance and personnel.
This has decreased from $587bn in 2014. While the USA's defence spending is declining, China's is increasing. Its budget stood at $191bn in 2015 - up from $176bn in 2014.