Asylum seekers moving to Europe have raised their adopted nations' economic output, lowered unemployment and not placed a burden on public finances, scientists said on Wednesday.

An analysis of economic and migration data for the last three decades found asylum seekers added to gross domestic products and boosted net tax revenues by as much as 1 percent, said a study published in Science Advances by French economists.

The findings come amid a rise of anti-immigrant sentiment across Europe, where immigration peaked in 2015 with the arrival of more than a million refugees and migrants from the Middle East and Africa.