That chart does not even work because you would have to implement the bitcoin decline etc.
This is supply inflation, not price inflation.
Sorry for my lack of economic knowledge, but what is the real difference?
Supply inflation refers to new amounts of the currency being printed (in this case, mined).
Price inflation refers to the currency's price/exchange rate devaluing relative to other goods (price of goods go up) or currencies (demand for other currencies goes up), even if the supply of the currency in question remains the same.