Lust reformulation timeline

Hi all,

Not very familiar with Lush, so apologies if this is a silly question. I’ve been trying to track down the fragrance a deceased loved one used to wear, which I’m almost certain was either Gorilla Perfume Lust or one of the earlier versions of Lust.
Her bottle was definitely from the 2000s/early 2010s. I remember the scent incredibly vividly, so after trying the current lust, i was disappointed to find how different it is.

From lurking, I’ve gathered that Lust has been reformulated a few times, but I can’t work out when that happened. I’ve been looking for a very long time, so I’m getting pretty desperate, and have recently stumbled upon 15 ml of a summer 2018 batch. Before I spend a small fortune on it, could anyone who remembers tell me which production years are closest to the original scent, and which ones I should avoid?

I’d really appreciate any advice. Thank you in advance.