Given is the bar chart putting six Australian cities in comparison of their reserved water levels within 2 specific time marks of October 2009 and 2010. In overall, most regions saw a rising effectiveness in reserving water with Canberra at the best performance.
Getting into more details, as easily seen from the graph, Sydney and Canberra were leading the water reserving game with just under 80% in October 2009, which then reaching over 80% and 90% in October 2010, respectively. Meanwhile, Darwin and Melbourne stayed behind all with the reserving capability merely under 50% in both time stones. Following right after Sydney and Canberra were Brisbane and Perth.
At another angle, one can recognize the similarity of those cities if looking closely, which entails that 4 out of 6 cities were increasing productivity and effectivity in reserving water shown through the incline of water reserved after 1 year. Surprisingly, Darwin was in a contradictory situation to those cities, and Brisbane by some means perfectly remained the proportion of below 60% in 1 year.