The euro capped off the most tumultuous year in its short history on Friday, slipping to a 10-year trough below 100 yen and struggling to hold gains against the dollar, a trend traders expect to continue in 2012. The euro fell 0.9 per cent to 99.77 yen (Dh4.73) and looked set to end the year down more than 8 per cent against Japan\'s currency. It held up a bit better against the dollar, shedding 3.1 per cent since the start of 2011, but day-to-day trading for most of the year was extremely volatile. From around $1.33 (Dh4.88) in January last year, the euro soared to $1.4939 by May, then began a steady descent as a Eurozone debt crisis that began in smaller countries such as Greece and Ireland spread to the larger core economies of Italy and Spain. Budget shortfall On Friday, the euro traded at $1.2940, less than a cent above its 2011 low hit earlier last week. The dollar lost 0.9 per cent to 76.95 yen and ended the year down 5.2 per cent against Japan\'s currency. \"Given that we are closing the year below $1.30, the path seems to be set,\" wrote Dennis Gartman, an independent investor and author of the daily Gartman Letter. He predicted the euro would drift toward $1.20 in early 2012 \"as the resolve on the part of the political, fiscal and monetary authorities in Europe are put to test.\" The focus shifted to Spain on Friday after the country\'s new government said the 2011 budget shortfall would be much larger than expected, and it announced tax hikes and wage freezes that could push Spain back to the centre of the crisis. Modest bounce The news drove the euro below 100 yen, though it later recovered some ground against the dollar, partly as traders took some last-minute profits and closed their books on 2011. It may even be due for a modest bounce in early January if only because positions are so heavily stacked against it. Commodity Futures Trading Commission data on Friday showed bets against the euro swelled to a record in the latest week. \"Since the market is overly bearish against the single currency, that does leave it susceptible to short-covering bounces,\" said Joe Manimbo, market analyst at Travelex Global Payments in Washington. \"But overall I think these anti-euro bets are justified given the still-unresolved debt crisis and the poor growth prospects.\" Elsewhere, sterling rose 0.8 per cent to $1.5530, ending the year little changed against the dollar. Chinese factor The same baggage that dragged on the euro last year — worries about sovereign debt levels and a lack of policy solutions — could hammer it this year, Manimbo said, adding that it could slide to $1.25 or even lower in the first quarter. In the absence of a comprehensive European policy response to the debt crisis, the euro could test its 2010 low of $1.1876 this year, some traders said. Some also said any decline in Chinese demand for US assets could push the dollar lower. China has been a steady dollar buyer in order to limit gains its own currency, the yuan. Chinese authorities loosened their grip a bit on the yuan last year, letting it appreciate by 4.7 per cent against the dollar. It closed at a record high against the greenback on Friday. Dollar, yen up The euro\'s troubles have benefited the dollar and yen, both of which tend to attract safe-haven flows during times of trouble. Against a basket of major currencies, the dollar was on track to finish the year up 1.3 per cent, its second consecutive annual rise. Still, questions remain about the strength of the US economy and whether the Federal Reserve will opt for a third round of monetary easing to boost lending and growth. If the Fed were to flood the financial system with more money through asset purchases or to state plans to extend its zero interest-rate policy beyond mid-2013, the dollar could struggle.