This chart shows from mid-2004 when I first visited Brazil until today. The value of the United States Dollar has basically fallen off a cliff—at least when compared to the Brazilian Real—since then.
Unfortunately it has not seemed to make a huge difference in the way day-to-day life is lived. In fact, the price of a lot of things has gone up (groceries comes to mind).
I suppose the people this effects most are those who are paid in US Dollars. Foreign workers like missionaries, and people whose company has assigned them to Brazil, but still pay in Dollars.
An up-to-date, and interactive chart like the one above can be found at Google Finance.
Update: Here is another look at money in Brazil.
