Research Groups By selected year

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<img class="ac-icon-open" src="/_assets/23c048c4e278024490c6ac1b855e5de4/icons/plus-white.svg" width="12" height="13" alt=""/> <img class="ac-icon-close" src="/_assets/23c048c4e278024490c6ac1b855e5de4/icons/minus-white.svg" width="12" height="3" alt=""/>

<img class="ac-icon-open" src="/_assets/23c048c4e278024490c6ac1b855e5de4/icons/plus-white.svg" width="12" height="13" alt=""/> <img class="ac-icon-close" src="/_assets/23c048c4e278024490c6ac1b855e5de4/icons/minus-white.svg" width="12" height="3" alt=""/>

<img class="ac-icon-open" src="/_assets/23c048c4e278024490c6ac1b855e5de4/icons/plus-white.svg" width="12" height="13" alt=""/> <img class="ac-icon-close" src="/_assets/23c048c4e278024490c6ac1b855e5de4/icons/minus-white.svg" width="12" height="3" alt=""/>