<P> There were 153,842 Mediterranean sea arrivals to Italy in 2015, 9% less than the previous year; most of the refugees and migrants came from Eritrea, Nigeria and Somalia, whereas the number of Syrian refugees sharply decreased, as most of them took the Eastern Mediterranean route from Turkey to Greece . </P> <P> The first three months of 2016 saw an increase in the number of migrants rescued at sea being brought to southern Italian ports . In April 2016, nearly 6,000 mostly sub-Saharan African migrants have landed in Italy in just four days . In June 2016, over 10,000 migrants have been rescued in just four days . </P> <P> In 2016, 181,100 migrants arrived in Italy by sea . In April 2017, more than 8,000 migrants were rescued near Libya and brought to Italy in just three days . Based on UN-data, about 80,000 refugees were registered at Italian refugee centers in the first half of 2017, an increase of 14% compared to the same time period in 2016 . In June 2017, 10,000 asylum seekers were picked up in the Mediterranean sea by the Italian coastguard and other naval vessels in just a couple of days . EU ambassador Maurizio Massari has expressed concern about the recent uptake of refugee arrivals on Italian's coastline, which would reach 200,000 in 2017 . As a result, foreign aid vessels docking in Italian ports may no longer be able to do so because of stricter admission policies and exceeded limits in Italian asylum centers . </P> <P> In July 2017 Italy drew up a code of conduct for NGO rescue vessels delivering migrants to Italian ports . These rules include </P>

Where do most of the refugees come from