Laravel 5 - How to use union in more than two tables/queries with Query Builder or Eloquent?

I have 10 tables that i want 'union'. Here my table name with same fields.

sell_2007
sell_2008
sell_2009
...
sell_2015
sell_2016

In the example given by laravel do union in the two tables only (https://laravel.com/docs/5.3/queries#unions), how if the table more than two tables/queries? In my case there are 10 tables. How to do that with Query Builder or Eloquent?

Thank you for your help.

via Fredy