[IEEE 2010 European Modelling Symposium (EMS) - Pisa, Italy (2010.11.17-2010.11.19)] 2010 Fourth UKSim European Symposium on Computer Modeling and Simulation - An Adaptive-Network-Based Fuzzy Inference System for Long-Term Electric Consumption Forecasting (2008-2015): A Case Study of the Group of Seven (G7) Industrialized Nations: U.S.A., Canada, Germany, United Kingdom, Japan, France and Italy