According to data from the UN High Commissioner for Refugees the number of registered Syrian refugees are 2,715,789 as of 6. March 2016.

But the numbers refer to registration accumulating since 2012.

But not all of these registered Syrian refugees have stayed in Turkey. More than a million of them have left Turkey for Europe?

According to UNHCR:

1,000,573 refugees arrived in Europe via Greece and Italy alone in 2015, a total of 856,723 reached Greece from Turkey.