Would you be kind enough to tell me your opinion concerning the proper use of the grammatical tenses in the following sentences?
I wanted to go to Paris last year and I want to go there now.
I have wanted to go to Paris since last year.
I wanted to go to Paris years ago and I still want to go there.
I have wanted to go to Paris for years.
Thank you for your efforts.
They all look fine to me.
They all express the same basic meaning: the subject's persistent and ongoing desire to visit Paris.
We could decide which one to use based on anything from arbitary choice, register, habit, what we expect the listener may want to hear, etc, etc.