Per capita C02 emissions almost doubled from 5.6 tonnes in 1990 to 10.7 tonnes in 2007. Carbon intensity, defined as C02 over energy, decreased at an average annual rate of 1.0% over the same period. On 17 November 2009, the government formally adopted the voluntary mid-term GHG reduction goal which means a 30% emissions reduction from the BAU level by 2020.