I started posting my comic since November of 2014, although I've been on Tapas since before that.
My comic got into New & Noteworthy within a few weeks -- very soon after I posted the end of my chapter 1, I think. IIRC, that's when my sub count shot up to 800+, from below 100.
I also got a banner feature on the front page once. Memories are a bit fuzzy, but I think my sub count went from like... 3k+ to 6k+ from that feature?
Now, the overall stats. This can be very misleading. I mean, think about comic A that has accumulated 100 likes total, and comic B that has 500 likes. Plot twist: comic A has only one episode (100 likes per episode), while comic B has 800 episodes (less than 1 like per episode). And that's just one of many ways the stat total can be skewed...
I know my overall views are very skewed thanks to the features I've gotten (banner feature once, and at least one daily snack). A LOT of people looked at the first page/ snack page and didn't look any further. Are those views really worth counting for the purpose of calculating growth?
Likes, too, are a bit mysterious. There are a couple of comics that I read that happen to have comparable subscriber count as mine, and my comic gets less likes per episode compared to those. We're talking about a difference of 300ish versus 500+ likes per each episode, consistently. Not sure what's causing it. Maybe they just get more views, and their views/like ratio is actually similar to mine? Who knows? (Not every subscriber actually reads the comic... In my comic's case, I have 10.6k subs, but less than half of them actually read the comic. Less than 25% keep up with the updates.)
I also post on Webtoons, and definitely grow faster there with regards to subscribers at least. I have 13k+ subs there compared to 10.6k subs here, and I've only been posting there for a year. HOWEVER, I think other comics with 10k+ subs get like 800+ likes per update? Whereas mine gets less than 300 these days, haha XD; Again, noooo idea why there's such a stark, consistent difference!
Every work grows and performs differently. Some people see explosive growth (like 1,000+ subs) at the beginning -- maybe they brought an army of following from a different site, or got a shout out from a popular creator. But that's certainly not the case for most people...