Iraq's economy is dominated by oil sector, which provides more than 90% of government revenue and 80% of foreign exchange earnings. Iraq’s population average annual growth rate is 3.21%, with total population of 33.42 million in 2013. In the same year, the country’s CO2 emissions were 137.98 Mt representing 8% of total Middle East emissions. Its total primary energy supply in 2013 was 50022 thousand tons of oil equivalent (ktoe), with 85% coming from oil and 15% from natural gas. Iraq suffers from serious power shortages due to political conflicts, insufficient generating capacity and increasing energy demand. It is projected that by 2035, Iraq will need to install around 70 gigawatts of generation capacity to meet its growing electricity demand.