Health spending has increased in absolute terms, but not as a proportion of national income.医疗花费在绝对数目上有所增长，但在国民收入中所占的比例没有增长。The chart shows government spending expressed as a proportion of national income.这幅图表说明了政府开支在国民收入中所占的比重。Iron and steel make up one quarter of the country's national income.钢铁业占该国国民收入的四分之一。