You're doing something wrong trying to grow it, mate. Not trying to rip on you here, but if after 18 months you get 4,300 pageviews a month (=110 pageviews a day) you probably should reconsider wasting your time on it. Max you can expect from that many pageviews is $5 a month, so hmmmm.... don't quit your dayjob
Mate, what's your niche and where does your traffic come from? $2 per 3,500 hits seems really too low...
Are these your own articles or just download from others? Because many of the sites are using same articles as you are, too. And google will think that the content are not original and it hates it! If that's your own writing, then you should do some link trading or advertise your site.
You have got very few visitors.You need to increase that count to earn more.I get daily 4500 pageviews on my blog still i make around $3 daily on an average.