Government think-tank NITI Aayog is the slowest among 52 central ministries and departments in addressing public grievances, according to a Centralised Public Grievance Redress and Monitoring System report. NITI Aayog disposed only 54% of total 5,883 grievances received between January 1, 2014, and December 28, 2017, the report added. Meanwhile, the External Affairs Ministry was the swiftest.