From Longman Business Dictionary
doldrumsdol·drums /ˈdɒldrəmzˈdoʊl-, ˈdɑːl-, ˈdɒːl-/ noun [plural] informal if an industry or market is in the doldrums, there is very little increase in prices or very little trade taking placeThe mortgage market has been in the doldrums for three years but now business is picking up.