Short Answer: Yes.
Longer Answer: Depending on the competition of your niche, your post frequency, your SEO/tag Kung Fu, your titles, and your X-factor, the reality is that it's different for everyone. All of those translate into views, views translate into subscribers.
Here are my numbers if it helps:
First video: Nov 14th
Post frequency: once a week, sometimes an extra.
Total videos now: 16
Total Channel Views: 102k
Subscribers: 440
I know some at 150 subs that have been at it a year, and I know a rare few that got 10k, even 100k in their first year. That's rare though.
I can say with some certainty that the first 100 subs are the hardest, then it gets a little easier with each milestone if you put the hard work.