The Institute for Supply Management released its non-manufacturing purchasing managers' index for the U.S. on Tuesday. The index rose to 54.5 in March from 53.4 in February, beating expectations for an increase to 54.0.

A reading above 50 indicates a growth in the service sector.

The ISM's new orders index increased to 56.7 in March from 55.5 in February.

The business activity/production index increased to 59.8 in March from 57.8 in February.

The ISM's employment index was up to 50.3 in March from 49.7 in February.

The prices index jumped to 49.1 in March from 45.5 in February.