下面是我市1995年至2005年电视机和收音机产量的变化图。请简要说明其变化规律，分析其原因，并总结出结论。
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In 1995, only about 500 TV sets were produced in our city while the number of radios was six times as large. But in 2005, things were quite different. We can clearly see that the production of TV sets went up sharply while that of radios fell quickly during the ten years.
There are several reasons for the great change. In the first place, owing to the advances in science and technology, it is possible for factories to produce more TV sets. Secondly, with the improvement of the living standard, people are becoming richer and richer and more people can afford a TV set. Moreover, thanks to the increasing desire for entertainment, people tend to turn to TV to relax themselves.
All these factors in turn motivate factories to produce larger quantities and higher quality of TV sets. That is why the production of TV sets is on the increase while that of radios is on the decline