The given graph represents how many houses were built in the cities of Derby and Nottingham over the ten years commencing from 2000.
A glance at the graph reveals that during the past ten years, the number of new houses in the cities of both Derby and Nottingham witnessed fluctuation; however, the variation of the data of Derby was much more stable than that of Nottingham. Notably, the cities in both areas reached their peak in 2009, while the fewest houses were built in Derby in 2001 and Nottingham in 2006.
From 2000 to 2005, generally, the number of new houses increased in Derby, whereas that in Nottingham fluctuated. In 2000, Nottingham started with a higher number of houses built at 50 than Derby, with fewer than 50. Over four years, the trend of Derby continued to see a significant increase by approximately 50. In contrast, the figure in Nottingham saw a two-thirds decline to around 25 in 2002 before experiencing a doubling in 2003. Until 2005, the number of houses built in Derby remained stable at around 125, while a steady increase was experienced in Nottingham and that reached around 80.
After four years, the number of houses built in Derby cities underwent a significant upward trend, meanwhile that in Nottingham cities witnessed a dramatic fluctuation. In Derby, built houses continued to be stable until 2007, then rose steadily to almost 350 in 2009, reaching the highest point over the period. On the other hand, in Nottingham, the number of constructed houses fluctuated sharply, rising to under 200 in 2007, after which it reached a lowest point in 2006. Similarly, the number fell sharply in 2008 to around 20 but rose sharply again to peak at 250 in 2009. Although Nottingham’s growth was more abrupt and volatile, both cities peaked in 2009.