The figure of 152 is correct BUT that was stated as the supply to the UK market and not total RHD supply but due to the way it has been delt with as commented above RHD cars are required for in Europe UK, IoM, Jersey, Guernsey along with Republic of Ireland, Malta and Cyprus. All of these islands have a very long and historic association with mainland UK speak English so i think you might understand what could be possible!! A number of these locations are shall we say tax havens so a very strong market for such products.
Other major RHD markets Japan (there is an Abarth network here but supply and demand) the West Indies again a close association with UK, Australasia most of Southern Africa, India, Hong Kong.
I might be able to comment a bit more in the future.