 In late 2015, Sweden introduced temporary border checks on the Øresund Bridge between Denmark and Sweden and public transport operators were instructed to only let people with residence in Sweden board trains or buses.The measures reduced the number of asylum seekers from 163 000 in 2015 to 29 000 in 2016.A 2016 SOM Institute survey published by University of Gothenburg reported that between the years 2011 and 2016, the estimated share of people with concerns about the increasing number of immigrants increased from around 20% to 45%.