The bar graph given demonstrates information about time travelling to work daily of people in four different cities in Australia, namely Sydney, Perth, Brisbane, and Adelaide from 2002 to 2010.
Overall, it is evident that the total time spent commuting increased after eight years in almost all cities except for Adelaide. Additionally, it is notable that Sydney residents spent the most time travelling to work while that of Adelaide was the lowest.
Regarding the cities of Sydney and Brisbane which shared a similar tendency, in 2002, their starting points were relatively low compared to the years onwards at roughly 35 and 27 minutes respectively. Following this, the average time spent by citizens in these two metropolises climbed up steadily until 2008 when both figures reached their peaks of approximately 39 minutes for sydney and 37 minutes for the other. After that, in 2010, both areas observed slight declines and ended at about 38 minutes for the former and 34 minutes for the latter. Another point worth noting is that throughout the whole surveyed period, the chart for commute time in sydney always stayed the highest of all, never went down below 35 minutes per day.
Concerning the remaining cities, the graph of Adelaide started at lowest compared to others, at around 24 minutes in 2002. Similarly, the average time spent to go to the workplace in this area went up continuously until its peak of approximately 28 minutes in 2006. From this point onwards, the chart kept decreasing at a similar rate as it surged and finally stood at around 24 minutes at the end of the time frame. On the other hand, the daily time it took for commuters in Perth to go to work remained exactly at the same rate in the first six years, at roughly 26 minutes. However, it suddenly soared at the ending to about 34 minutes per day.