The Swiss Federal Customs Administration released its trade data on Thursday. The Swiss trade surplus climbed to CHF3.43 billion in May from CHF2.66 billion in the previous month. April's figure was revised down from a surplus of CHF2.85 billion.
Exports increase 5.4% in May, while imports were down 3.0%.
On a yearly basis, exports fell 8.9% in May, while imports decreased 2.4%.