composite index number

例句：

1. 1.The company's composite index is up 5% from last year.
   该公司的复合指数比去年上涨了5%。
2. 2. The composite index is a measure of the overall health of the economy.
   复合指数是衡量经济总体健康状况的一个指标。
3. 3. The government uses the composite index to track economic growth.
   政府使用复合指数来追踪经济增长。