The average oil price for OPEC crude oils in May was 24.97$ per barrel while the price was 17.64$ per barrel in April of 2020. Over last twelve months the price has fallen 64.31%.
The OPEC Basket, is a weighted average of prices for petroleum blends produced by OPEC countries members. It is used as an important benchmark for crude oil prices.
OPEC stands for Organization of the Petroleum Exporting Countries, it coordinates the oil policies of its member countries, and consequently to have the influence on the international oil market.
These are the members of the OPEC: Algeria, Angola, Ecuador, Gabon, Iraq, Iran, Qatar, Kuwait, Libya, Nigeria, Saudi Arabia, Venezuela, and the United Arab Emirates.