proportion of the tertiary industry

With the rising of per capita GDP, the proportion of the tertiary industry in the GDP increases steadily. Why does the tertiary industry increase?

世界各国产业结构演进的一般规律表明，随着人均gdp的增长，第三产业增加值占gdp的比重将不断增加。

Secondly, optimize industrial structure, and balance the proportion of primary, secondary and tertiary industry and that of service industry inside.

优化产业结构，合理调整服务业与第一、二产业以及服务业内部比例关系；

We will energetically develop modern distribution, tourism, intermediary services and other aspects of tertiary industry, and gradually raise their proportion in the national economy.

大力发展现代流通、游、介服务等第三产业，逐步提高其在国民经济中的比重。