after then, after that, or from that time

[toto16]

Sales were highest in 2010 but after then/after that/ from that time,( for example from 2010 to 2018) sales decreased sharply from 10 million units to 3 millon units.

Which one do you think work best in the above sentence? If any does not sound correct, what do you say ?

 

[Lun-14]

Which one do you think works best in the above sentence, toto?

 

[Franco-filly]

While thinking about which you think works best, I suggest you use "dramatically" rather than sharply, as sharply implies a very sudden drop - not one that takes eight years!

 

[toto16]

I think all of the examples seem to be fine. what do you think?

 

[Franco-filly]

"After then", is incorrect
"After that" could work but I feel as though it suggests a shorter time period, or that something else has happened to the sales meanwhile

If, by "from that time," you mean sales have been declining up until the present time, I suggest "..but since then sales have declined.."