Although the U.S. dollar is one of the world's most important reserve currencies, when the value of the dollar falls against other currencies as it did between 1998 and 2008, this often prompts people to flock to the security of gold, which raises gold prices. The price of gold nearly tripled between 1998 and 2008, reaching the $1,000-an-ounce milestone in early 2008 and nearly doubling between 2008 and 2012, hitting around the $1800-$1900 mark. The decline in the U.S. dollar occurred for a number of reasons, including the country's large budget and trade deficits and a large increase in the money supply.