I went to AdSense in your city last month and team G says put more ads on your pages. Usually I put two ads, once in a while three.
As an experiment on one of my higher traffic pages which had two ads, I cut it down to one well placed ad.
Ended up with less clicks however CPC went from low twenty cents to mid sixty cents per click. Results for last three weeks on that page less ads = more revenue, almost 40% more.
Of course each website is different and this may not work for you but its worth testing. Added benefit is the page looks cleaner than one full of advertising.