Since 2009, there have been over 12.5 Million coins mined, worth, at the peak price of $1,200 (USD) per bitcoin, about $15 Billion 1 (with caveats though — discussed later).
In the previous two articles,As of January 2014, the rate of production stands at a fairly steady 1.4 Million bitcoins per year 2, though the early production was double this figure due to the reward for mining also being double.
the absolute maximum number of bitcoins that can possibly be available will be 20,999,999.9769, reached at or about the year 2150 till end of world.