An important development emerged at the end of 2014 which, if it continues, bodes well for air freight markets. Air freight is closely linked to world trade (by value about a third of goods traded internationally are shipped by air). Air cargo growth stagnated from 2011 as world trade volumes basically grew in tandem with domestic production. A strong growth trend in cross-border trade emerged over the second half of 2014 (while domestic industrial production remained stable) which has had a positive impact on air cargo volumes.