Bitcoin as concept became 16, and the blockchain will be running for 16 years by January.
It's incredible how Bitcoin is just 16 while the problem it solves is as old as human himself; transferring value through time and space. Until 2009, gold was the only true form of money, yet even it had lost some of its resistance to inflation as advances in technology made it easier to extract.
We don't appreciate enough how lucky generation we are.