i think too you can earn a bitcoin in one year through bounties. but you should look in advance, if the bounty is serious and no scam. if you do that and with a bit of luck, you soon have a bitcoin together. of course you have to invest time and participate in many different bounties like facebook, twitter, signature and other.
It is not impossible but very hard to do. It depends on your time and effort to do different bounties. And with your rank seems difficult to earn 1 bitcoin for a year but you have a big dream to reach it then you must try harder to work on your goal to make it happen. Usually, there are several bounties in one ICO so you must participate all of them to make it easier to get into your dreams.