TaskWarior and listing tasks completed in specified time range

Besides mountain of inefficient papers (good thing about paper is you can lose it easily), I'm using TaskWarrior to manage my TODOs. Today I'm creating list of things I have finished in last (fiscal) year, so its reporting and filtering capabilities come handy. But as not too advanced user, it took me some time to discover how to list tasks completed in specified time range:

$ task end.after:2017-03-01 end.before:2018-03-01 completed

ID UUID     Created    Completed  Age  P Project         Tags R Due        Description                                                                                                                                                        
 - 5248839d 2017-01-24 2017-03-20 1.0y H                                   Prepare 'Investigating differences in code coverage reports' presentation