MRI - How often

RRMS & Aubagio (Teriflunomide)

I ask here as I am unsure how often everyone else gets MRIs done. I live in a foreign Asian country where MS is not a common illness and a handful of Neurologists studied this MS thing.

2 years since Ive had my diagnosis. Dr. said that treatment is well but need to do an MRI annually - seem right? curious.