I am a new comer and not much experienced on BTC. The chart seems to me very difficult to understand. Please help me.
It's easy to understand: it's bullshit
What are you talking about? Notice the question mark after 3x Decrease? Its a speculation that perhaps for the year 2014 that bitcoin will not have increased.
I already explained. You drew your black vertical lines in the wrong place. Try again with the black vertical lines on September 1 of each year. Then read calculate the increase for each year and you will get a much more accurate number
I understand since sept 1, even this year it will have gone up... but we will see in the next 3 months... i highly doubt it will go up for the entire 2014.