The dollar, the most common foreign currency is having a very changing year. It is not only losing againg the euro, the most commercialised currency, but also against other foreign currencies. Apart from the brasilean Real, which currency is at the top of the ranking with an appreciation of 21,4% against the dollar, the other foreign currencies are gaining positions in front of the american foreign currency but slowly. Regarding other foreign currencies, the canadian dollar rise to 18% (the currency had been 1 to 1 with the american currency). Other foreign currency that is in the top ten of the ranking is the euro with a profit of the 12,30% in the year. On the other hand, the Swiss franc gained a 10% in the year and was one that got the maximum against the dollar yesterday. It is said that this currency is used as value refuge while volatility scenaries. Other foreign currency that was appreciated this year was the yen that gained 8% in 2007 and since some years has been promising more, but is still not very high. The problem is that the Japanese interest rate is very low and this provokes an stagnancy of the nominal value of the Japanese currency.