More than one million refugees and migrants came to the European Union this year, while almost 3,700 died or went missing in perilous journeys which reaped huge profit for smugglers, according to the International Organization for Migration. Almost all those arriving came across the Mediterranean or the Aegean Seas, and half were Syrians fleeing the war. Another 20 percent were Afghans, and 7 percent were Iraqis, IOM and the U.N. refugee agency UNHCR said in a joint statement. Out of a total of 1,005,504 arrivals to Greece, Bulgaria, Italy, Spain, Malta and Cyprus by Dec. 21, the vast majority -- 816,752 -- arrived by sea in Greece, IOM said. The record movement of people into Europe is a symptom of a record level of disruption around the globe, with numbers of refugees and internally displaced people far surpassing 60 million, UNHCR said last week. A spokesperson from IOM said war in Syria was only one among many causes, including Ebola and Boko Haram in West Africa, an earthquake in Nepal, conflicts in Libya, Yemen, South Sudan, Central African Republic and Afghanistan and Iraq.