Apples, oranges and swivel

I've been playing with Swivel lately. It's fun, but their "Compare" icon, an apple and an orange, is particularly apt. Here, I compare a data set I entered (the price of first class postage in the US, 1910 until today) to the Consumer Price Index. Kind of nonsensical--one is an emergent trend, the other is a set of conscious decisions by a small group--yet somewhat interesting in terms of how the our postage rate continues to lag behind all the other products (thus shutting up my complains of how it's so expensive)