Compared with the same month a year earlier, the jobless rate dipped 0.6% in March, the data showed.
An estimated 660,000 people were unemployed and looking for work in March, slightly down from 674,000 a month earlier. Male jobless rate was 6.9%, while female unemployment reached 6.4%.
The figures refer to people aged between 15 and 74 and are based on the definition recommended by the International Labor Organization.
The unemployment rate for people aged 25-74 was 5.2% in March, the data showed. The latter category made up for 72.2% of the total jobless people in the third month of 2013.