The overall performance of the UAEs economy is heavily dependent on Oil exports, which account for over 30 percent of total gross domestic product (GDP). Growth in real GDP was 7.2 percent in 2005, partially due to higher Crude Oil prices. For 2006, real GDP growth is forecast to slow to 5.1 percent. The non-oil segment of the UAEs economy also is experiencing strong growth, particularly the Petrochemicals and financial services sectors. The UAE is a federation of seven emirates - Abu Dhabi, Dubai, Sharjah, Ajman, Fujairah, Ras al-Khaimah, and Umm al-Qaiwain. Political power is concentrated in Abu Dhabi, which controls the vast majority of the UAEs economic and resource wealth. The two largest emirates -- Abu Dhabi and Dubai -- provide over 80 percent of the UAEs income. In June 1996, the UAEs Federal National Council approved a permanent constitution for the country. This replaced a provisional document which had been renewed every five years since the countrys creation in 1971. The establishment of Abu Dhabi as the UAEs permanent capital was one of the new frameworks main provisions. The current head of state, Sheikh Mohamed bin Rashid Al Maktoum, took office in January 2006, following the death of his brother Sheikh Maktoum bin Rashid al-Maktoum.