Finally! Level 20 took about 4 months!
New Emblem: Best Of 2007 Chooser!
Wow, that was fast, just yesterday I was 29.3 percent done level 18.
That was really fast, yesterday I was about 85% complete level 15, and now i'm around 20% done level 16...
Edit: I'm actually 28.5% done level 16! For me, leveling up gets quicker each level...