A bar chart showing how many immigrants entered the construction industry per year from 2011 to 2020. In 2011 the number was a little more than 20,000, which increased the next five years to 2016 when it peaked at more than 60,000. In 2017 it declined to about 40,000, increased again in 2018, flattened out in 2019, and decreased to fewer than 40,000 in 2020.