http://www.cato.org/blog/saudi-arabia-gulf-states-accepted-syrians

Saudi Arabia and the Gulf States Have Accepted Many Syrians

By Alex Nowrasteh

Many more Syrians are living in Saudi Arabia and the Gulf States than at the beginning of the Syrian civil war in 2011.  The World Bank reports that 1,000,000 Syrians resided in Saudi Arabia in 2013, a whopping 795 percent increase over 2010.  There were 1,375,064 Syrian migrants living in the Gulf States in 2013, a 470 percent increase over 2010.  Excluding Oman, the 2013 Syrian population in every Gulf State has increased dramatically since right before the beginning of the Syrian civil war.
Syrian Population Residing in Each Countryhttp://www.cato.org/blog/saudi-arabia-gulf-states-accepted-syrians