anchor.diff:            New discussion threads
             <span class="right grey-text"><%= number_with_delimiter Thredded::Topic.last.id %> total</span>
           </div>
  -        <%= area_chart @reports.pluck(:day, :thredded_threads_created), colors: ['#2196F3'] %>
  +        <%=
  +          area_chart @reports.pluck(:day, :thredded_threads_created)
  +                             .group_by { |date, total| date.year }
  +                             .map { |year, data|
  +                                totals_per_month = Hash.new(0)
  +                                data.each { |date, count| totals_per_month[date.strftime("%b")] += (count || 0) }
  +
  +                                {
  +                                  name: year, 
  +                                  data: Date::ABBR_MONTHNAMES.reject(&:nil?).map { |month| [month, totals_per_month[month]] }
  +                                }
  +                              },
  +              colors: ['#2196F3']
  +        %>
         </div>
       </div>
     </div>
  
positive.code:         <div class="card-title">
            Updated documents
          </div>
          <%= area_chart @reports.pluck(:day, :documents_edited), colors: [Document.hex_color] %>
        </div>
      </div>
    </div>
  
negative.code:           New discussion replies
            <span class="right grey-text"><%= number_with_delimiter Thredded::Post.last.id %> total</span>
          </div>
          <%=
            area_chart @reports.pluck(:day, :thredded_replies_created)
                               .group_by { |date, total| date.year }
                               .map { |year, data|
                                  totals_per_month = Hash.new(0)
                                  data.each { |date, count| totals_per_month[date.strftime("%b")] += (count || 0) }
  
                                  {
                                    name: year, 
                                    data: Date::ABBR_MONTHNAMES.reject(&:nil?).map { |month| [month, totals_per_month[month]] }
                                  }
                                },
                colors: ['#2196F3']
          %>
        </div>
      </div>
    </div>
  