"The negative factors you see here are all leftovers from the past," says one EU diplomat, adding that most of them are homegrown. Economic experts are anxiously waiting to see what's going to happen this summer. They fear there could be a decline in the tourism sector, one of the most important pillars of growth in the Greek economy, accounting for 17 percent of gross domestic product. The volume of tourist bookings from the United States is reported to have dropped by up to 50 percent. The number of British vacationers, some 3 million annually in the past, alongside 2.3 million Germans, is expected to shrink by up to 30 percent.