The Fraser Institute report "Changes in the Affordability of Housing in Canadian and American Cities, 2006–2016" examines the impact of housing costs and affordability on cities and their economies. The authors find that changes in housing affordability and population growth have had significant effects on both Canadian and American metropolitan areas. They also find that changes in median incomes and shelter costs have played a key role in shaping housing affordability. The report concludes that policies aimed at increasing housing supply and improving affordability can help to support economic growth and higher incomes for workers.