Consumer demand and finite supplies also played a major role in the cost of gasoline and petroleum products over the past 12 - 24 months.
http://superex.web44.net In December 2004 oil sold for $37 per barrel. In September 2005 oil cost more than $63 per barrel, following temporary spikes in August that exceeded $70 per barrel. This resulted in price jumps of 50% for gas and diesel fuels, as well as significantly increased manufacturing and delivery prices for virtually every product and process in construction.
