I wished I were rich.

[diamondcutter]

1. I wish I had been here yesterday.
2. I wish I were rich.
3. I wished I were rich.

Source: http://www.yygrammar.com/Article/201310/3502.html

I read these three sentences in a grammar website of China.
I can understand the first two sentences, but I can’t understand the third one. I’d like to know if the third sentence makes sense. If so, what does it mean?

 

[emsr2d2]

At some point in the past, you wished you were rich (at the time of speaking).

 

[Tdol]

You no longer wish to be rich.