I think the only improvement (which you probably can't do) is have the year flash up in the upper middle of the graph so one doesn't need to squint at the x axis. Otherwise is cool.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix







