以下是某英文报联合你校对你市1999年到2009年家庭消费变化的图表，请据此写一篇短文，作一文字说明。

The average family income in our City increased from 8,000 yuan per year in 1999 to 20,000 yuan in 2009. In the meantime, the structure of the average family expenses has changed, too. These graphs show the change clearly.   

The biggest part of the average family expenses is housing. In 1999, the average family spent 25 percent of its income on housing. In 2009, expenses on housing rose to 42 percent. Food and drink are the second biggest part of the average family expenses. In 1999, about 18% of the average income was spent on this item. In 2009, the figure grew to 30%. As a result of such increase in the expenses on housing and food, expenses on other items have been reduced from 57% in 1999 to 28%in 2009. joozone.com

Thus, a conclusion can be drawn that as income increases, people can improve their living step. But still the average family has to spend a large part of income to meet the basic needs.

作文地带提供翻译
我市家庭的平均年收入从1999年的8000元增加到了2009年的20000元。同时，家庭的平均结构也发生了改变。这些图表对这一变化描述的很清楚。

最主要的花费是买房。1999年，平均每个家庭25%的收入用于买房。到2009年这一比例上升到42%。饮食是第二高的花销。1999年，平均每个家庭18%的收入用于饮食到2009年上升到30%。由于在买房和饮食上花销的增加，用于其它消费的比例从1999年的57%降到2009年的28%。

因此我们可以得出以下结论，随着收入的增加，人们能够逐步改进他们的生活水平，但仍有很多家庭不得不把大量的收入都用于满足生活的基本需求。