Last year, all of you have welcomed your new Chief Priest

[Karen123456]

Last year, all of you have welcomed your new Chief Priest, have united your strength with the spirit of unity between priesthood and laity in itai-doshin together with your new Chief Priest, and have successfully achieved the objective given by High Priest Nichinyo Shonin,
to increase Hokkeko membership by 50% on the occasion of the 770th anniversary of Nikko Shonin's birth.

Can present perfect tense be used in the above when "Last year' (time) is mentioned?

Thanks.

 

[Chez]

No, it can't, unless you mean 'During the last year' i.e. in a period of time leading up to the present. In which case, you must use 'During'.