The graph above illustrates average minutes commuters spent for travelling to work in Sydney, Perth, Brisbane, and Adelaide from 2002 to 2010 in every 2 years. The highest average time minutes was in 2006 Sydney, while the lowest were similar in 2002 and 2010 Adelaide.
Sydney’s trend was initially increasing from 2002 to 2008, before declining in 2010, which has the similar trend as Brisbane. Perth on the other hand, remaining stable from 2002 to 2008, and rised in 2010. Adelaide was consistently increasing from 2002 to 2006, then suddenly declining in 2008 and 2010.
Overall, Sydney has the highest average time minutes in every year comparing in other city. In conclusian, all categories experienced changes over time and several cities had showed identical patterns, which are Sydney and Brisbane.
