Nice plot of production numbers from 1979 to 1998 in this thread.
I can't verify the numbers shown here but I do remember the 1982's popularity especially among the kids I went to high school with and the 1986.5 just blew us all away. They did not stay in show rooms long.
MK2 and MK3 by far were the most produced and sold. Those two sports cars were a hot commodity back in the day. It was not uncommon for us to drive by a dealership at lunch just to drool over one in the show room.
Also partly why MK4 prices are so high today, not manufactured in large numbers. Back then sheet metal sold cars and the MK4 just did not connect with most people like the earlier Supras did. I knew the goodness that was under the hood of the MK4 from sampling SC300's but the exterior design took a very long time to grow on me. The demise of the concealed headlights bothered me with this model and I passed up several opportunities to buy one in the late 90's when nobody wanted them 😩. By the time I could cope with the bulbous headlamp styling, it was not easy to find a used one since the car really flopped in the show room. If ever a movie sold a car this was it. Too bad the movie did not come out in 1994.