求翻译：据统计，全世界旅游人数在迅速膨胀。从1981年到1984，平均每年增长2亿，到1990年，约47亿。这个数字和当时的世界人口完全相等。这些数字表明旅游业的这些变化与旅游人数的增长是息息相关的。是什么意思？

According to statistics, the number of tourists in the world in rapid expansion. From 1981 to 1984, the average annual growth rate of 200 million in 1990, about 4.7 billion. This figure and the world's population at the time exactly equal. These figures indicate that these changes in the tourism ind

According to statistics, the number of the world's rapidly expanding tourism. From 1981 to 1984, the average annual growth to 200 million IN 1990, about 4.7 billion. This number and then the world's population are equal. These figures indicate that these changes in tourism and tourism growth is clos

Statistics have indicated, the world traveling population is inflating rapidly.From 1981 to 1984, the average grew every year 200,000,000, to 1990, approximately 4,700,000,000.This digital and world population closely coincide then.These numerals indicated the tourism these changes and the traveling

According to statistics, the rapid expansion in the number of tourism all over the world. From 1981 to 1984, an average annual increase of 200 million by 1990, about 4.7 billion. This number with exactly equal to the world's population at that time. These figures indicate that the tourism industry i

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