PART I 66 Over the past three years, the composition of our revenue base has undergone a change as a result of our  strategy to diversify our revenues and focus on generating increased revenues from higher growth businesses,  such as internet business.  Our domestic fixed communications business has been an important source of revenues over the last three  years. We derive domestic fixed communications from the provision of ADSL and FTTx access services that  provides customers with data access lines. Increasing internet penetration in Taiwan and higher data traffic have  contributed to a significant increase in our revenues from domestic fixed communications services in recent  years. The percentage of revenues from domestic fixed communications within total revenues decreased in 2010  compared to 2009. It was mainly due to the greater decreases in domestic long distance calls because of mobile  services substitution and the mandatory tariff reduction imposed by the National Communications Commission  and the decline in local call service revenue. However, we believe that domestic fixed communications business  will continue to generate a significant portion of our revenues.  Year ended December 31, 2008 2009 2010 Revenues: Domestic fixed communications business 36.2% 36.0% 34.9% Mobile communications business 44.0  43.6  44.0  Internet business 11.4  11.9  12.1  International fixed communications business 7.9  7.7  7.7  Others 0.4  0.7  1.3  Total 100.0% 100.0% 100.0% The table below sets forth the revenues from our principal lines of business as a percentage of total revenues  for the periods indicated.  Our domestic fixed communications business revenues are derived primarily from the provision of local,  domestic long distance, broadband access, leased line service, MOD, domestic data services and domestic other  services including information and communication technologies, corporate solution services, billing handling  services and the leasing of real estate properties. In addition, we also derive fixed line revenues from providing  interconnection services to other carriers. Our revenues from mobile communications business are principally  derived from the provision of mobile services, paging services, sales of mobile handsets and data cards and  mobile other services. Our revenues from internet business are generated principally from HiNet internet service,  internet VAS, data communication services, internet data center, and internet other services including government  services and corporate solution services. Our revenues from international fixed communications business derived  primarily from international long distance, international leased line, international data services, satellite services,  and international other services. Our other revenues are principally derived from non-telecom services.  Changes in our revenue composition and sources of revenue growth  Each of these developments is discussed below.  A number of recent and expected future developments have had, and in the future may have, a material  impact on our financial condition and results of operations. These developments include:  Overview  •  changes in our revenue composition and sources of revenue growth;  •  increased competition in the fixed line, leased line and mobile services markets;  •  tariff adjustments;  •  capital expenditures as a result of technological improvements and changes in our business;  •  taxation.  •  provisions for pension payments and other stock-based compensations to our employees; and 