English question, please help. Thank you.?

When you say "I don'T know."
Do most people aspire the "T" sound, or do they normally say "I dunno"?

Do you aspire the T sound all the time, such as in the following situations? Thanks.

MosT people
whaT would you like?
whaT was your name?
whaT is it?
I don'T know
Don'T forget
Don'T go
don'T want to
don'T
I wanT a car.
aT home
aT nine
eaT Them