The line graph illustrates the quantity of complaints regarding the noise level to Environmental Health local officials in Newtown between 1980 and 1996.
Overall, there was a certain decrease in the complaints figures regarding the noise produced by road works and factories, with the latter showing a steady dynamic for most of the period in question. However, the number of complaints about the traffic and household noise followed an upward trend.
Taking the rising trends first, it can be seen that the figures household activities remained steady between 1980 and 1984, with a slight decline the following four years. Then, the numbers sparked a surge reaching an all-time high of 1200 complaints per year. Likewise, the numbers of people who complained about traffic noise almost doubled over the given period, hitting a plateau of 600 cases annually.
By contrast, the number of noise clams related to factories, although having shown an insignificant, yet steady rise from 1980 to 1988, later demonstrated a slow fall in figures, which showed the descending dynamic till the year of 1996. Regarding road works, it should be noted that despite falling markedly during the first seven years, it then leveled off for a couple of years, and after showed a steady decline to less than 100 complaints a year by the end of the time period in question.