The Chinese have become the single biggest source of global tourism income after spending $102bn (£67bn; 79bn euros) while travelling abroad in 2012. The total is 40% higher than the year before, and puts them well above the next two highest-spending countries, Germany and the US. The figures come from the UN World Tourism Organisation. It says higher incomes, looser travel restrictions and a strengthening currency are behind the surge. Other emerging market countries saw their tourism numbers jump, too. The Russian Federation saw spending rise by 32% to $43bn, putting it in fifth place in the ranking of international tourism spending, up from seventh.ANOTHER SIGN THAT THE USA IS DECLINING.