Internal links do not open on a new tab

Several links on our website take users to other pages.  I'll call these

"internal links." 

The internal links do not open in a new tab even though when I set them up I select "open in new tab." I want all links to open in a new tab.

i understand that if I add this code in header injection it will force all links to open in a new tab: <base target="_blank"/>

However,  I cannot use the header injection feature without upgrading.

Does anyone know a workaround?  I'm happy to add something to each page.

Thank you for your help.  Explicit directions are greatly appreciated.

Can you share link to page where you have problem? We can check easier.

http://www.pnaiorpdx.org

There are examples on the "learn more" buttons on the  right side of the main page.  Thank you for any help.

Thank you so much for your help!.  I made the change in www.google.com/preferences  and now it works fine.  The problem is,  I'd like this to be true for all the users.

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The problem is,  I'd like this to be true for all the users.

There is no way to override a user's preferences with settings or code in your site.

Thank you so much for your help!