The dollar, which measures the debt to six other currencies, gave 0.22 percent on Monday. During the year, the index rose by 4.4 percent, and the highest percentage increased in three years.
"The US dollar is moving towards the end of the calendar year in a defensive, because global reserves – given that some markets closed the year – have increased after President Trump's positive comments on trade with the United States and China," said Sean Osborne, head of the Foreign Exchange Strategy in Scotiabank.
Global stock markets rose Monday, fueled by optimism caused by signs of progress in the trade dispute between Washington and Beijing, a tough year for stock.
The risk appetite improved slightly when US President Donald Trump said on Saturday that he has a "very good call" with Chinese counterpart Xi Jinping in which they discussed trade issues and added that the two sides have made "great progress".
The yen, which tends to benefit in times of geopolitical or financial tension, since Japan is the largest global creditor, maintained its appeal and the dollar reached a minimum of six months against the Japanese currency.
While the dollar is relatively stable at the end of 2018, its high value, a weaker stock market boom, fewer repatriations from American companies, and the possibility that the Federal Reserve will not increase interest rates as many times as previously proposed pose a challenge to debt
On Monday, the euro rose 0.08 percent against its US counterpart. Although the currency has moved against the dollar in recent weeks, the continental currency has lost about 5 percent in 2018 against the dollar.
The British pound, which this year was hit by fears for Brexit, rose 0.31 percent against the dollar on a three-week jump. The British currency lost about 6 percent of its value against the dollar this year.