Row number resets on applying table security filter

[Nirmal_Giri]

Hello, I am currently working on developing app to track sales leads of our employee and facing issues with security filters.
I use table “Visits” that has key id column [Visit ID]. I use a combination of row number and year to generate unique [Visit ID]. This below expression used as initial value"
CONCATENATE(“SV-”,YEAR(TODAY()),"-0000",[_RowNumber]-1)
I am trying to limit the records visible to our employee based on useremail() and have added a separate column [User Email].Currently there are 14 rows in the table and next row number will be 15.
SV-2020-00001
SV-2020-00002
…
SV-2020-00014

When no security filters are applied, my initial value is shown “SV-2020-00015”.
However, when I apply the security filter based on useremail() and use a different login id to create my first record in “Visits” table, the initial value is displayed as “SV-2020-00001” instead of “SV-2020-00015”.

How can i make sure that i have a running unqiue id value when security filter are applied?