What CTR do you get with adsense?

My new project (1 month old) has 2,5K uniques per day, and generates 25 EU/daily of adsense. Ctr is around 0.9% -1.2%

I don't want to use all those ctr, squeeze, click optimized themes, as i do care about my project about it visitors, and i believe it has HUGE potential.

If i could double my CTR - bring it to ~2% (which is still very normal) - would generate 50 EU/daily.

Any good ways to increase ctr without changing template? (i already use some methods to increase time on site, page views count)

Thank you