世界经济的发展进入20世纪,第三产业水平的高低已成为衡量国家和地区经济发展水平的一个重要标志。90年代初,世界第三产业占国内生产总值的比重平均约为60%,其中34个低收入国家平均为31%,48个中等收入国家为50%,22个高收入国家平均为65%,高收入国家第三产业比重高出低收入国家1倍以上。可见,经济发展水平高的国家,第三产业都比 The Development of the World Economy In the 20th century, the level of the tertiary industry has become an important indicator of the level of economic development in countries and regions. In the early 1990s, the world tertiary industry accounted for an average of about 60% of GDP. Among them, 34 low-income countries average 31%, 48 middle-income countries 50% and 22 high-income countries 65% , The proportion of tertiary industry in high-income countries is more than double that of low-income countries. Can be seen that countries with high levels of economic development than the tertiary industry