My girlfriend is unable to have a conversation, talk or communicate with me. How can I deal with this better?

Silence123
Sorry, a little long. I'd really appreciate your help :)

I've been with my 21 year old girlfriend for four years (I'm 22). She is a terrible conversationalist and communicator. She has never asked me any questions in the time we've been together apart from "How was your day?" each time we're together. She never makes conversation, responds to any form of conversation or questions I make or ask or tell me anything of how she's feeling or what's happening in her life.

Even if the questions or conversation I make are about her many and extremely varied interests or our common interests, it always fails to ignite any conversation or extended response from her. She has never continued a conversation after I bring up a topic or ask her a question. She simply answers my question or conversation with a very short answer and then remains silent.

This makes things quite awkward for an extroverted and chatty man like me. The only exception is when she's telling me of her feelings of love and attraction towards me. When she's saying how she feels and I tell her how I feel back, it almost resembles a conversation.

I ask very open ended questions and listen intently to everything she says. She just seems to have little concept of talking, conversation and communication. She's a confident woman and does a lot of activites.

I love her with all my heart and I want to be with her for a long time. Does anyone have any tips on how to deal more effectively with a lady like this?

Are most women similar to her these days?

Updates
+1 y
We have spoken at length about how I feel about this. This seems so ingrained in to who she is as a person that she will probably never be more communicative. Therefore, I need strategies for dealing with this situation and how she is a little better.
My girlfriend is unable to have a conversation, talk or communicate with me. How can I deal with this better?
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