How to change default permission level choice when share a document?

We are using SP2013 on-premise. On a site collection there is a document library. There are several users with "Manage Permission" permission. Based on their need, they will change the permission on individual documents (permission inheritance is broken).

However, when they try to share the document to other users, the default permission level choice is "contribute". Can we change the default choice to be "read only"? It is because the permission level part is always hided. User need to click the "expend" icon to see the level choice. It is very easily grant the wrong permission level by mistake (and send email out).