From 1990 to 2008 the worlds most developed economies cut their greenhouse gas emissions from energy production by about how much percent?

From 1990 to 2008, the world's most developed economies reduced their greenhouse gas emissions from energy production by approximately 11%. This decline is attributed to a combination of factors including shifts towards cleaner energy sources, improvements in energy efficiency, and the implementation of various environmental policies. However, despite this reduction, the overall global emissions continued to rise during the same period due to increased energy consumption in developing nations.