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.
In fact, if you draw the lines on every Sept as DannyHamilton suggested, you will need to wait for another 12 months to see if we have a "downward year".
