When looking at the google keyword tool did you use [Exact] phrase because if you used broad then it could well be ... err broad. You need to be specific when you are finding your audience. Plus whether you like it or not you need to be ranking for more than just one term per site because algorithms change daily and if something bad happens... boom business gone.
As others suggested use the exact search to get a clear indication. Also even if you are number one this doesnt mean you will receive 100% of traffic.
I always use exact search, and I realise that being no. 1 doesn´t mean I´ll get 100% of the traffic, but even 10% would be 2,000 visitors, a lot more than the traffic I´m getting now.
you should check the monthly search volume of your phrases. use google's keyword tool get an estimated idea of how big your phrases are. https://adwords.google.com/select/KeywordToolExternal
I strongly agree with him because also thinking the same. So, you have to need check your landing page for Traffic point of view.
may be you are not taking proper keyword for traffic.you post blogs comment ,submit artical in different website...for getting more traffic.
Another example of keyword searches: 'Florida Travel Guide' usually gets more searches than 'Florida Travel'. This makes a huge difference in your chances to get more traffic. Good luck.
If you are showing up in SERPs for the appropriate keywords, then it will most likely be your Title, Description, and Landing Page that are the problem. Ad copy that isn't "Selling." However, if your website is ranking for a keyword that it doesn't appropriately reflect (within it's content, images, and etc), then visitors will look right over your website's listing.
That seems a little off, maybe with a high saturation of ads (the big bar at the top with three premium ads.) Right now, I'm swallowing about 80% of the traffic as #1, but it is also a very very lightly advertised query.
Cyberlight gave us the stats. If you are in first position on Google search for a keyword and your site title and excerpt are average, you will generally get 40% of the click-throughs. If your results vary significantly from that, you can only look to your title and excerpt for the reasons. Once people are on the Google results page, they don't look far down the list until they click the first time!
I also can't believe to these numbers ... I always try not to visit those sponsored ads, because there is that title next to them, and that doesn't give me trust, that those results are what I'm searching for .. so I will also keep thinking that those numbers aren't correct .. (I really hope so)
I have exactly the same problem as the OP and even when adding content to my blog rarely see significant improvements with my UV's