Improve formula for dynamics list unique values based on two criteria

[thomasuponor]

I want to improve the formula for extracting unique zip code for 2019.
I am currently using this formula but its very slowly:
=IFERROR(INDEX('Project Data'!E:E;MATCH(0;COUNTIF('Dashboard Sales'!G114:$G$114;'Project Data'!E:E)+IF('Project Data'!L:L>=$E$113;1;0)+IF('Project Data'!L:L<=$D$113;1;0);0));"")

Zip	Date	Unique Zip
7000​	01-02-2019​	7000​
3000​	01-02-2020​	9000​
7000​	01-03-2019​	5000​
9000​	01-07-2019​
5000​	29-03-2019​

 

[jasonb75]

It is slow because you are using entire columns in arrays, try cutting them down to something more realistic.