More than a billion tourists will take a trip this year crossing an international boundary, a threshold never before reached, UN officials told a meeting tourism ministers gathering in Mexico last week.

“We will have more than a billion tourists, that means one-seventh of humanity. This has never happened in history,” said Taleb Rifai, head of the UN World Tourism Organisation Tuesday speaking to tourism ministers from the G20 countries.

The number of international tourist arrivals is expected to rise in 2012 by three to four per cent, reaching the historic one billion mark by the end of the year, according to WTO figures, rising from some 980 million tourist arrivals in 2011.

International tourism grew by 5.7 per cent in the first two months of 2012, the agency said, surpassing 131 million in January and February, up from 124 million in the same period last year.