As is exhibited by the figures given in the bar chart, the numbers of mobile-phone subscriptions had notable changes during the period from 2000 to 2008, with developing countries experiencing a sharp increase from under 1 billion to around 4 billion and that of developed countries rise gently during the same period. This trend highlights the rapid expansion of the communication industry in developing countries.
Many factors contribute to the tendency reflected in this chart. To begin with, developing economies have experienced substantial development in recent years, which greatly boosted infrastructure, including telecommunications, including telecommunications. Moreover, globalization has opened new markets, creating opportunities for mobile-phone companies in countries with large populations. Most importantly, since earnings of people in developing countries rose remarkably, it is under the circumstance that mobile-phone subscriptions become more affordable for a broader segment of the population.
In general, we should bear in mind that economic developing is of great importance to social progress. For the reasons above, in the next few years, the communication industry will also witness a bigger and faster growth, bridging the digital divide and fostering further economic growth.