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Today, Dubai City has emerged as a global city and a business hub. Dubai has recently attracted world attention through many innovative large construction projects and sports events. This increased attention has highlighted labor rights and human rights issues concerning its largely South Asian workforce. Almost half the population of Dubai comprises Indians. Dubai's property market experienced a major deterioration in 2008 and 2009 as a result of the worldwide economic downturn following the financial crisis of 2007 -- 2010. A culmination point was reached in 2010 with the completion of the Burj Khalifa (Khalifa Tower), now by far the world's tallest building at 829.84 m (2,722.57 ft). The Burj Khalifa's design is derived from the patterning systems embodied in Islamic architecture, with the triple-lobed footprint of the building based on an abstracted version of the desert flower hymenocallis which is native to the Dubai region. A $3.89 billion Dubai Metro project is currently operational. Dubai Metro is the world's second cheapest metro transportation system after Tehran Metro in Iran. The Dubai Metro is the first urban train network in the Arabian Peninsula. In 2010 the population of Dubai (the Emirate) was 2,262,000 people. Wikipedia.