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@Viper. Yes I do. Money has become worth less over time and so of course the fluctuations in terms of billions of dollars has grown greater, a billion dollars has become worth a lot less over time.

Basically these graphs show an exponential curve - well all of them apart from the one not measured in dollars (% change) and the two which take inflation into account (2005 dollars) - which is exactly what you would expect with a reasonably steady percentage decrease in the value of money.