This summary chart presents a fact that less people wanted to call "Bitcoin is dead" with time. It is an unofficial recognition for survival of Bitcoin.
Every year that bitcoin survives, is slap in the face of critics who wish bitcoins bad and are always quick to say that bitcoins will fail.
These little disappointments to the predictions of these critics can change the mind of people who use to believe in them and take everything they say very seriously. Every year the number of believers and investors in bitcoins will increase because each new year is a testimony of the credibility of bitcoins.