The given bar chart depicts the average time consuming in travelling to work by commuters each day in Sydney, Perth, Brisbane, and Adelaide between 2002 to 2010.
Overall, the average travelling time of Sydney prevailed in 5 years compared with those of three other cities while the opposite was witnessed in Adelaide.
In terms of time commuters consume to move in Sydney, it is the largest average travelling time of 4 cities which began at 35 minutes in 2002, then increased steadily between 2004 (36 minutes) and 2006 (38 minutes), and peaked at nearly 40 minutes in 2008 before declining to 38 minutes in 2010. Regarding those of Perth, commuters spent average time seemed to remain unchanged from 2002 to 2008 at 27 minutes, before rising rapidly in 2010 at 33 minutes.
In connection with the average committing time in Brisbane, those of Brisbane had the similarity similar trend of Sydney, began at 27 minutes in 2002, before (previously/ prior to) increasing sharply in 2004 (28 minutes) and 2006 (32 minutes), reached a peak at 36 minutes in 2008, and then decreased by 4 minutes in 2010. With regard to those of Adelaide, the average time of travelling had a symmetric shape between 2002 and 2010, which is peaked at 28 minutes in 2006. In 2002 and 2010, they are the same number at 23 minutes. 25 minutes is are the average time for travelling to work in both 2004 and 2008.