The dollar index

The dollar index, which measures the strength of the greenback versus a basket of its competitors fell 0.42 percent on Friday and ended trading at the level of 97.55 points. Raw materials denominated in dollars, become cheaper for investors who work with other currencies when the dollar depreciated.

The dollar depreciated against the euro as the currency pair EUR / USD reported a weekly increase of 1.03% to 1.0992.

Futures on Comex gold platform of exchange Nymex rose 3.70 dollars (0.35 percent) and closed the session at 1 075.70 dollars an ounce. For the week, gold prices recorded a fall of 8.40 dollars (0.77 percent). In seven of the last eight weeks show decline.

Investing.com predicted that gold is about to record a 9 percent decline in 2015, which would be the third consecutive year of decline. Expectations of more expensive credit bearish attitudes cause as noble metal difficult to compete with high-yield assets.

Silver futures for delivery in March dropped by 22.6 cents (1.6%) on Friday to finish trading at a level of 13.88 dollars per ounce. The decrease for the week amounted to 70.6 cents (4.43 percent). For the year, the decline is expected to be 9%.

Copper futures for delivery March increased by 4.4 cents (2.12 percent) on Friday and ended the session at 2.116 dollars per pound. Earlier in the day the price rose to 2,138 dollars per pound, which is the highest value since November 26. For the week, the price of copper increased 3.7 cents (1.74 percent) amid news of a reduction in supply of large mining companies such as Glencore, Freeport-McMoran and Anglo American.

Copper is expected to account for depreciation of 27% this year.