(1)  Data from the Department of Population, Ministry of the Interior, Republic of China.  Demand for local customer lines has historically been driven by population growth. However, with the development of  mobile technologies, this trend has been declining. The number of fixed line customers decreased by 1.1% in 2010 compared to 2009  due to customers replacing fixed lines with mobile services and also as a result of the adverse economic conditions. The number of  fixed line customers decreased by 1.8% in 2011 compared to 2010. We attribute the decrease in fixed line customers to a general  industry-wide trend of migrating from fixed line services to mobile and internet telephony services. In adherence to a ruling by  Supreme Administrative Court, starting from September 2011, we no longer require our ADSL service subscribers to apply for our  fixed line services. We also allow our existing ADSL subscribers to unsubscribe their fixed line service. The foregoing factors also  caused the decrease in our fixed line customers.  The following table sets forth information with respect to local telephone usage for the periods indicated.  (1)  Includes minutes from local calls made on pay telephones. It also includes minutes from fixed line-to-mobile calls due to the  change in policy starting from 2011. (2)  Calls to our HiNet internet service, which are recorded as part of our internet services, are not included in our local call minutes  or revenues.  Minutes from local calls increased in 2011 due to the inclusion of minutes from fixed line-to-mobile calls in this category  starting from 2011 as a result of the NCC’s change in policy for collecting the tariffs of fixed-to-mobile phone calls by our fixed  communications business.  We charge our local telephone service customers a monthly fee and a usage fee. We also charge separate fees for some value- added services. The monthly fees for our primary tariff plans are NT$70 with a deductible on usage fees of NT$25 for residential  customers and NT$295 for business customers. Our primary peak time usage fee is NT$1.6 for three minutes or NT$2.7 for ten  minutes, depending on the tariff plan selected by the customer, and our off-peak usage fee is NT$1.0 for ten minutes. Our usage fees  are the same for residential and business customers.  The following table sets forth information with respect to the average local telephone usage charge per minute for the periods  indicated.  P AR T I As of December 31, 2009 2010 2011 (in thousands, except percentages  and per household data) Taiwan population (1) 23,120 23,162 23,225 Fixed line customers: Residential 9,328 9,165 8,948 Business 3,120 3,142 3,133 Total 12,448 12,307 12,081 Growth rate (compared to the same period in the prior year) (2.2)% (1.1)% (1.8)% Penetration rate (as a percentage of the population) 53.8% 53.1% 52.0% Lines in service per household 1.19 1.15 1.11 Year ended December 31, 2009 2010 2011 (in millions, except percentages) Minutes from local calls (1)(2) 14,602 13,671 15,569 Growth rate (compared to the same period in the prior year) (8.0)% (6.4)% 13.9% Year ended December 31, 2009 2010 2011 NT$ NT$ NT$ Average local telephone usage fee (per minute) 0.74 0.74 1.36 Growth rate (compared to the same period in the prior year) 0.4% 0.5% 83.8% 27