Cycles of Oil (1970–2017), Metals (1980–2017) Price and the Eleven–Year Solar Cycle : Statistics of Strong Relations

The grouping of Wolf numbers, Brent crude oil prices and metal price indexes over the years of the average solar cycle Schwabe allowed the author to establish their strong ties.As a result, it became possible to predict oil prices on the basis of the predicted values of Wolf numbers according to the scale developed by the author.In the article the forecast of oil price for Brent for 2018 in the amount of $ 60.5 per barrel is developed. Previous published in 2015, the author's forecast for a further decline of oil prices in 2016 and their reverse growth in 2017 was successful