The given bar graph illustrates the amount of renewable energy in the total supply in 2000, 2004 and 2007 for Australia, Germany, Norway and Iceland. The following details can be observed from the given bar graph. Norway has the highest percentage of renewable energy in all the three given periods, followed by Iceland, whereas Australia has the lowest percentage. In 2000, Norway had the highest renewable energy with 62% followed by Iceland with only 10% less renewable energy. Whereas, Australia and Germany had only 10% and 12% renewable energy. Following a similar trend in 2004, Norway rose to 4% of renewable energy than the previous year and Germany had a 5% increase and Australia had a 2% increase respectively. Interestingly Iceland had a 7% increase in renewable energy which was the highest in 2004 of any country in the given graph. Moreover, in 2007 Norway saw a significant boost with 78% and Germany increased to 17%. But Iceland and Australia saw a decline in renewable energy w...