The line graph describes the average price of houses in three nations over a period of 15 years, from 1997 to 2014.
Overall, all the examined countries showed a rise in the price throughout the studied period, among which country A ranked the most expensive.
Beginning from the average house price of about $180,000 in 1997, nation A experienced a significant rise in 2003, over $500,000, the figure then dropped down during the next three years. Until 2009, the price gradually rose to around $600,000 and remained almost consistent before increasing to about $610,000 in 2014.
The remaining two nations shared the same trend, as the figures gradually went up between 1997 and 2004, then reached the lowest in 2008, with above $250,000 for nation B and about $200,000 for nation C. The prices constantly increased during the following years before recorded a slight drop in the final observed year.