With hotels facing mass cancellations, Iraqis in the holy city of Najaf are being hit hard by US sanctions on neighbouring Iran, which have forced cash-strapped pilgrims to stay home, Agence France Presse reported. The city draws more than 1.5 million Shiite pilgrims each year. The vast majority hail from neighboring Iran, whose population is overwhelmingly Shiite. "More than 85 percent are Iranians," said Saeb Abu Ghoneim, president of the hoteliers union in the city. Signs throughout the city, 150 kilometers south of Baghdad, are translated into Farsi. But just days after Washington this month re-imposed sanctions on Iran, following President Donald Trumps decision to pull the US out of a landmark 2015 nuclear accord with Tehran, the impact is already being felt in Najaf, AFP said. The Iranian rial has been severely hit by internal economic woes and the US measures, losing around half of its value against the dollar since April. Farzad Reza Ali, an Iranian who did manage to fund his trip to Najaf, said the drop in pilgrim numbers was a direct result of the currency crisis. "(Its) because the rial is worth nothing," he said, a travel company badge tied to a ribbon around his neck in the colors of the Iranian flag. The first round of sanctions against Iran covers financial transactions and imports of raw materials. Further measures due to hit in November will affect Irans central bank and the vital hydrocarbon industry. At the start of the year the dollar exchange rate was 42,900 rials. It has since hit nearly 120,000 rials on the black market. To get the $40 (35 euros) needed for a visa to Iraq, Mokdabandeh Mehrban said he had to go to the black market. "Now the market fluctuates and its not supported by the government, so there are fewer Iranian pilgrims," he said. Cancellations by Iranian pilgrims could have dramatic consequences for Iraqs tourism sector, which last year directly or indirectly employed some 544,500 people, AFP said. It also contributed three percent of GDP, nearly $5 billion dollars, according to the World Travel and Tourism Council. Tourism is almost exclusively religious in Iraq and is concentrated in Najaf and nearly Karbala, the countrys other holy Shiite city. As Najaf prepares to welcome pilgrims for numerous religious festivals this month, there is a notable lack of Iranian arrivals. Transport links have been slashed -- Najaf airport, which used to offer 35 flights a day between the two countries, now operates just 12.  Officials say most of the passengers on the flights leaving Najaf for Iran are Iraqi pilgrims heading for Iranian holy sites. To counter the trend, hoteliers have been forced to offer rooms at bargain basement prices. "Prices have been slashed, to less than 50 percent sometimes," said Youssef Abu Al-Tabouk, owner of Najafs Al Balad Al Amine hotel. But discounted stays and other special offers are not enough to make up for the impact of sanctions, the 85-year-old said. Without Iranian pilgrims, he said, "the market is in free fall".