The Swedish krona rose to the highest level against the euro for six years on Wednesday, as the Swedish economy rapidly heats up amid concern over the standing of the European single currency.

In morning trading, it cost only 8.9218 kronor to purchase one euro, according to data provider SIX, marking the krona's strongest level against the common currency since December 7, 2004, when one euro could be exchanged against 8.9080 kronor.

The euro, which hit its all-time low against the krona in May 2000 with an exchange rate of 8.048, rose slightly again throughout the morning.

After plunging to an exchange rate of 11.618 kronor for one euro in March 2009 at the height of the financial crisis, the Swedish krona has strengthened rapidly as the Scandinavian country's economy has heated up and the central bank again has begun raising interest rates.

In the third quarter of 2010, Sweden posted a record annual growth rate of 6.9 percent -- the highest rate since quarterly measurements of gross domestic product (GDP) began in the 1970s.

While not a part of the eurozone, Sweden is a European Union member and is currently considered to have one of the healthiest economies in the bloc.

New Swedish statistics on Wednesday also boosted the image of an expanding economy: the service sector consumer confidence index jumped from 64.2 in November to 66.0 in December.

An index over 50 indicates expansion, while contraction is shown with numbers under 50.