The given line graph compares the average costs of residential property in US dollars of three countries in the period from 1978 to 2014.
Overall, there is a country A, which has the most expensive housing price, that exponentially increased through given period, and countries B and C, which have fluctuated improving in approximately same degree.
All three countries started with average housing prices around 40000 US Dollars in 1978. In 1979 country A had a surge, reaching 200000 US Dollars per house, while Country B and C experienced insignificant climbing to around 50000 US Dollars. In 1981 Country A fall back and had a leap, that increased to around 300000 US Dollars by 1987. Country A had a minimal drop in 2005 and peaked at 800000 US Dollars for houses in 2014.
In contrast, Country B and C had a approximately similar pricea until 1987, where Country B had a significant rise to 400000 US Dollars by 2002 and Country C experienced slight drop in 1990 and was steadily increasing until 2005. In 2008 Country C started sharply rising and climbed to 500000 US Dollars for housing by 2014. Meanwhile, Country B had a significant drop in 2005 from 400000 to 250000 US Dollars, but elevated it back by 2014.