This is my Specialized Rockhopper Comp 29 and I’m trying to sell it, the only problem is I can’t identify the year of the bike. When I bought it they said it was a 2016 model and it looks just like the one on the specialized website the only problem is my frame is slightly different, where the one one on the website has a slight hump near the seat tube mine is just straight. Can someone help me identify what year my bike is? Link for bike on website - https://www.specialized.com/gb/en/rockhopper-comp-29/p/106485?color=195504-106485 (Photo of my bike is on my Buy/Sell profile)