Thank you.
I suppose that once mining is completed, the price would then increase to a point that it would become more stable.
You could see that number yourself if you try to google but ah, forget. Everyone has different opinion but usually they think it will rise finally. But despite the fact that there will be no bitcoin to mine, it doesn't means price will be stable, for me it means that price will be very unstable, really. You have to consider that miners won't be able to mine bitcoin and they will collect it from transaction fees.
You can try the following link
http://www.bitcoinblockhalf.com/Total Bitcoins in circulation: 16,724,763
Total Bitcoins to ever be produced: 21,000,000
Percentage of total Bitcoins mined: 79.64%
Total Bitcoins left to mine: 4,275,238
We have only 20% of the bitcoins left without mined. The complete mining would be within long period of time accordingly.