and elevated stations using both broad-gauge and standard-gauge. All stations have escalators, lifts, and tactile tiles to guide the visually impaired from station entrances to trains. There are 18 designated parking sites at Metro stations to further encourage the use of the system. In March 2010, DMRC partnered with Google India (through Google Transit) to provide train schedule and route information to mobile devices with Google Maps. It has a combination of elevated, at-grade, and underground lines, and uses both broad gauge and standard gauge rolling stock. Four types of rolling stock are used: Mitsubishi–ROTEM Broad gauge, Bombardier MOVIA, Mitsubishi–ROTEM Standard gauge, and CAF Beasain Standard gauge. The Phase-I of Delhi Metro was built for US$2.3 billion and the Phase-II was expected to cost an additional . Phase-II has a total length of 128 km and was completed by 2010. Delhi Metro completed 10 years of operation on 25 December 2012. It carries millions of passengers every day. Delhi Metro is being built and operated by the Delhi Metro Rail Corporation Limited (DMRC), a state-owned company with equal equity participation from the Government of India and the Government of the National Capital Territory of Delhi. However, the organization is under the administrative control of the Ministry of Urban Development, Government of India. Besides the construction and operation of the Delhi Metro, DMRC is also involved in the planning and implementation of metro rail, monorail, and high-speed rail projects in India and providing consultancy services to other metro projects in the country as well as abroad. The Delhi Metro project was spearheaded by Padma Vibhushan E. Sreedharan, the managing director of DMRC and popularly known as the "Metro Man" of India. He famously resigned from DMRC taking moral responsibility for a metro bridge collapse, which took five lives. Sreedharan was awarded the Legion of Honour by the French Government for his contribution to Delhi Metro. Demographics According to the 2011 census of India, the population of the NCT of Delhi is 16,753,235. The corresponding population density was 11,297 persons per km2 with a sex ratio of 866 women per 1000 men, and a literacy rate of 86.34%. In 2004, the birth rate, death rate and infant mortality rate per 1000 population were 20.03, 5.59 and 13.08, respectively. In 2001, the population of Delhi increased by 285,000 as a result of migration and by 215,000 as a result of natural population growth,