Is Land Value determined at purchase even if rented years later?

[Levi Lais]

I purchased a home in 2020 when Portland Maps says the land value was $282,500.  We lived in it for about 20 months and then started renting it out in 2022 - current assessed land value is $327,500.  As I prepare for taxes, I'm trying to figure out which to use.  The land value has shot up $45K in 2 years so it's a relatively decent chunk of depreciation that I'd be missing out on if I went with the current assessed land value.