services within total revenues decreased in 2011 compared to 2010, mainly due to the the discounts we offered in June 2011.  Our international fixed communications business was also an important source of our revenues over the last three years. We  derived our international fixed communications revenues mainly from international long distance telephone services, international  leased line services and international data services. The revenues from our international fixed communications business as a  percentage of our total revenues decreased from 2010 to 2011, primarily because the decrease in international long distance service  revenue as a result of intensified market competition. We believe that our international fixed communications business will continue  to contribute to our revenues.  Other revenue grew primarily due to the increase in property sales. We adjust our tariffs and offer promotional packages from time to time primarily in response to market conditions. We also  from time to time are required to adjust our pricing in line with domestic regulations.  The National Communications Commission passed a resolution on December 21, 2006 adopting a price reduction plan  requiring the continuous reduction in telecommunication tariffs over three years. Minimum reductions of 4.88% for fixed line to  mobile call tariffs, 4.88% for the tariffs of our highest monthly rate plan, 4.88% for mobile prepaid calling card tariffs and 5.35% for  ADSL tariffs must be made each year. The price reduction plan also required us to stop collecting a NT$5.0 monthly maintenance  fee from our fixed line customers who have paid at least 20 years worth of tariffs and those who chose self-maintenance customers  starting January 1, 2008 and a NT$70.0 fixed line basic charge from our ADSL customers who only use data services. On January  29, 2010, the National Communications Commission announced a new tariff reduction plan starting on April 1, 2010 to March 31,  2013. The percentage of decrease set by National Communications Commission was ∆CPI- 4.816% for IP Peering fees, domestic  leased-line fees, ADSL access fees and long distance tariffs, and ∆CPI- 5.00% for fees for mobile calls to local fixed lines and other  networks and domestic mobile SMS, where ∆CPI is the year-over-year change of the consumer price index of previous year released  by the Directorate-General of Budget, Accounting and Statistics of the Executive Yuan. ∆CPI for 2009 that is used for the tariff  reduction starting from April 1, 2010 is -0.87%; ∆CPI for 2010 that is used for the tariff reduction starting from April 1, 2011 is  0.96%; ∆CPI for 2011 that is used for the tariff reduction starting from April 1, 2012 is 1.42%.  On January 1, 2011, we implemented the NCC’s change in policy for collecting the tariffs of fixed line-to-mobile calls from  mobile service providers to fixed communications service providers. As a result, our fixed communications business now has the  right to set and collect the tariffs for fixed line-to-mobile phone calls. On June 22, 2011, we implemented a discounted tariff along with broadband speed upgrade for our broadband service, under  which we provided a 30% or more discount to subscribers of 20 Mbps, 50 Mbps or 100 Mbps broadband access services. Moreover,  we reduced our ADSL tariffs by approximately 20% starting from 2012 in order to attract more broadband customers.  In addition, in 2011, there were complaints from the general public regarding our mobile data network congestion. To address  the situation, we adopted measures such as offering a 20% discount of the mobile data monthly fees from August 2011 to the end of  2012 for customers whose monthly data usage volume was less than one gigabyte.  As requested by the Legislative Yuan and National Communications Commission, we implemented a discounted tariff for  telecommunication services from Kinmen, Matsu and Penghu Islands to Taiwan in April 1, 2011. We further applied one single tariff  to all the telecommunication services for the entire country since January 2012. 68 P AR T I Tariff adjustments 