So ... Yes, we need a plugin :)

This time I am going to use a handy plugin called TablePress (310 KB).

Here it is:

https://wordpress.org/plugins/tablepress/

So let's see the usual speed tests ...

Here are my results before installing the plugin ...

... and the result after installing and activating the plugin:

As you can see, the plugin is literally "invisible " ...

So, let's see how it works ...