What is the average price of oil per barrel prior to Septmember 11 2001?

Prior to September 11, 2001, the average price of crude oil was around $25 to $30 per barrel. Prices fluctuated during this period due to various factors, including geopolitical tensions and changes in supply and demand. In 2000, for instance, oil prices were approximately $28 per barrel at the beginning of the year. Overall, the market was relatively stable compared to the volatility that would follow in the years after the attacks.