Shopify Tags total items

Question

In Shopify, how do I show a list of tags followed by the number of products with that tag?

Example: Black(12), Blue(10).

Currently the code looks like this,

Answer 1

Solution by Steph is working. But, if i have enabled grouped tags and want to show product count. Kindly let me know solution to append product count in following code:

'{%comment%} code for color, designer, material sidebar filter {%endcomment%}

          {%- for tag in collection.all_tags -%}
            
            {%- assign tag_parts = tag | split: '_' -%}

            {%- if tag_parts.size != 2 -%}
              {%- continue -%}
            {%- endif -%}

            {%- assign groups = groups | append: tag_parts.first | append: ',' -%} 
          {% endfor %}


    {%comment%} End of  code for color, designer, material sidebar filter {%endcomment%}'