I like the animation, it's an interesting way to show time series. If I were you, I would explore opportunities to build animated charts of all types (there's a challenge in the axis animation, to keep it smooth so viewers can make comparison between past and present without effort).

Thanks - that's actually a pretty good idea. With the base structure already needed for the bubble charts - animations, drawing axes, etc., it is not gonna be too difficult to extend this to other chart types.

May be when I get some spare time - I will put it into this.

The idea came from here - http://www.ted.com/talks/hans_rosling_shows_the_best_stats_y...

This was my first major project on javascript... I am not a developer by profession. What do you guys think?