But demand for health care is income-elastic: as people get richer they spend proportionately more on it.
但对保健服务的需求则与收入挂钩：人们收入增加后，在健康方面开支的比例也会上升。
2
In the different years, the family 's expenditure on education and the family' s income have a positive coefficient and their elastic coefficient is more than 1.